Home / 28,055.06-38,716.80-15,480.62

Finding the Fourth Proportional to 28,055.06, 38,716.80 and 15,480.62

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Solution

The fourth proportional to 28,055.06, 38,716.80 and 15,480.62 is: 21,363.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,055.06 : 38,716.80 = 15,480.62 : x
  2. Step 2: Convert to fraction form
    28,055.06/38,716.80 = 15,480.62/x
  3. Step 3: Cross multiply
    28,055.06x = 38,716.80 × 15,480.62
  4. Step 4: Simplify right side
    28,055.06x = 599,360,165.21
  5. Step 5: Solve for x
    x = 599,360,165.21/28,055.06
  6. Step 6: Final answer
    x = 21,363.71

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.