Home / 20,172.38-27,838.56-11,098.13

Finding the Fourth Proportional to 20,172.38, 27,838.56 and 11,098.13

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Solution

The fourth proportional to 20,172.38, 27,838.56 and 11,098.13 is: 15,315.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,172.38 : 27,838.56 = 11,098.13 : x
  2. Step 2: Convert to fraction form
    20,172.38/27,838.56 = 11,098.13/x
  3. Step 3: Cross multiply
    20,172.38x = 27,838.56 × 11,098.13
  4. Step 4: Simplify right side
    20,172.38x = 308,955,818.70
  5. Step 5: Solve for x
    x = 308,955,818.70/20,172.38
  6. Step 6: Final answer
    x = 15,315.79

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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.