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Finding the Fourth Proportional to 38,359, 57,539.22 and 10,657.72

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Solution

The fourth proportional to 38,359, 57,539.22 and 10,657.72 is: 15,986.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,359 : 57,539.22 = 10,657.72 : x
  2. Step 2: Convert to fraction form
    38,359/57,539.22 = 10,657.72/x
  3. Step 3: Cross multiply
    38,359x = 57,539.22 × 10,657.72
  4. Step 4: Simplify right side
    38,359x = 613,236,895.78
  5. Step 5: Solve for x
    x = 613,236,895.78/38,359
  6. Step 6: Final answer
    x = 15,986.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.