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Finding the Fourth Proportional to 30,747.29, 42,432.03 and 17,319.03

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Solution

The fourth proportional to 30,747.29, 42,432.03 and 17,319.03 is: 23,900.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,747.29 : 42,432.03 = 17,319.03 : x
  2. Step 2: Convert to fraction form
    30,747.29/42,432.03 = 17,319.03/x
  3. Step 3: Cross multiply
    30,747.29x = 42,432.03 × 17,319.03
  4. Step 4: Simplify right side
    30,747.29x = 734,881,600.53
  5. Step 5: Solve for x
    x = 734,881,600.53/30,747.29
  6. Step 6: Final answer
    x = 23,900.70

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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.