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Finding the Fourth Proportional to 30,559.38, 45,839.13 and 8,372.97

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Solution

The fourth proportional to 30,559.38, 45,839.13 and 8,372.97 is: 12,559.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,559.38 : 45,839.13 = 8,372.97 : x
  2. Step 2: Convert to fraction form
    30,559.38/45,839.13 = 8,372.97/x
  3. Step 3: Cross multiply
    30,559.38x = 45,839.13 × 8,372.97
  4. Step 4: Simplify right side
    30,559.38x = 383,809,660.32
  5. Step 5: Solve for x
    x = 383,809,660.32/30,559.38
  6. Step 6: Final answer
    x = 12,559.47

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1.5x scale

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.