Home / 28,469,169,496.62-39,287,453,055.03-15,781,873,013.10

Finding the Fourth Proportional to 28,469,169,496.62, 39,287,453,055.03 and 15,781,873,013.10

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Solution

The fourth proportional to 28,469,169,496.62, 39,287,453,055.03 and 15,781,873,013.10 is: 21,778,984,286.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,469,169,496.62 : 39,287,453,055.03 = 15,781,873,013.10 : x
  2. Step 2: Convert to fraction form
    28,469,169,496.62/39,287,453,055.03 = 15,781,873,013.10/x
  3. Step 3: Cross multiply
    28,469,169,496.62x = 39,287,453,055.03 × 15,781,873,013.10
  4. Step 4: Simplify right side
    28,469,169,496.62x = 620,029,595,122,611,126,272
  5. Step 5: Solve for x
    x = 620,029,595,122,611,126,272/28,469,169,496.62
  6. Step 6: Final answer
    x = 21,778,984,286.71

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.