Home / 12,126,985.80-18,190,478.70-7,277,094.60

Finding the Fourth Proportional to 12,126,985.80, 18,190,478.70 and 7,277,094.60

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Solution

The fourth proportional to 12,126,985.80, 18,190,478.70 and 7,277,094.60 is: 10,915,641.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,126,985.80 : 18,190,478.70 = 7,277,094.60 : x
  2. Step 2: Convert to fraction form
    12,126,985.80/18,190,478.70 = 7,277,094.60/x
  3. Step 3: Cross multiply
    12,126,985.80x = 18,190,478.70 × 7,277,094.60
  4. Step 4: Simplify right side
    12,126,985.80x = 132,373,834,319,185
  5. Step 5: Solve for x
    x = 132,373,834,319,185/12,126,985.80
  6. Step 6: Final answer
    x = 10,915,641.90

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.