Home / 20,529.57-28,330.82-11,098.13

Finding the Fourth Proportional to 20,529.57, 28,330.82 and 11,098.13

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Solution

The fourth proportional to 20,529.57, 28,330.82 and 11,098.13 is: 15,315.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,529.57 : 28,330.82 = 11,098.13 : x
  2. Step 2: Convert to fraction form
    20,529.57/28,330.82 = 11,098.13/x
  3. Step 3: Cross multiply
    20,529.57x = 28,330.82 × 11,098.13
  4. Step 4: Simplify right side
    20,529.57x = 314,419,151.11
  5. Step 5: Solve for x
    x = 314,419,151.11/20,529.57
  6. Step 6: Final answer
    x = 15,315.43

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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.