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Finding the Fourth Proportional to 28,082.52, 38,752.02 and 22,129.56

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Solution

The fourth proportional to 28,082.52, 38,752.02 and 22,129.56 is: 30,537.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,082.52 : 38,752.02 = 22,129.56 : x
  2. Step 2: Convert to fraction form
    28,082.52/38,752.02 = 22,129.56/x
  3. Step 3: Cross multiply
    28,082.52x = 38,752.02 × 22,129.56
  4. Step 4: Simplify right side
    28,082.52x = 857,565,151.71
  5. Step 5: Solve for x
    x = 857,565,151.71/28,082.52
  6. Step 6: Final answer
    x = 30,537.33

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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.