Home / 15,320.97-21,136.82-9,654.21

Finding the Fourth Proportional to 15,320.97, 21,136.82 and 9,654.21

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Solution

The fourth proportional to 15,320.97, 21,136.82 and 9,654.21 is: 13,318.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,320.97 : 21,136.82 = 9,654.21 : x
  2. Step 2: Convert to fraction form
    15,320.97/21,136.82 = 9,654.21/x
  3. Step 3: Cross multiply
    15,320.97x = 21,136.82 × 9,654.21
  4. Step 4: Simplify right side
    15,320.97x = 204,059,250.74
  5. Step 5: Solve for x
    x = 204,059,250.74/15,320.97
  6. Step 6: Final answer
    x = 13,318.95

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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.