Home / 20,663.97-28,516.42-11,232.53

Finding the Fourth Proportional to 20,663.97, 28,516.42 and 11,232.53

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Solution

The fourth proportional to 20,663.97, 28,516.42 and 11,232.53 is: 15,500.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,663.97 : 28,516.42 = 11,232.53 : x
  2. Step 2: Convert to fraction form
    20,663.97/28,516.42 = 11,232.53/x
  3. Step 3: Cross multiply
    20,663.97x = 28,516.42 × 11,232.53
  4. Step 4: Simplify right side
    20,663.97x = 320,311,543.14
  5. Step 5: Solve for x
    x = 320,311,543.14/20,663.97
  6. Step 6: Final answer
    x = 15,500.97

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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.