Home / 20,572.04-28,389.56-11,140.61

Finding the Fourth Proportional to 20,572.04, 28,389.56 and 11,140.61

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Solution

The fourth proportional to 20,572.04, 28,389.56 and 11,140.61 is: 15,374.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,572.04 : 28,389.56 = 11,140.61 : x
  2. Step 2: Convert to fraction form
    20,572.04/28,389.56 = 11,140.61/x
  3. Step 3: Cross multiply
    20,572.04x = 28,389.56 × 11,140.61
  4. Step 4: Simplify right side
    20,572.04x = 316,276,818.38
  5. Step 5: Solve for x
    x = 316,276,818.38/20,572.04
  6. Step 6: Final answer
    x = 15,374.11

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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.