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Finding the Fourth Proportional to 31,737.84, 43,798.17 and 18,308.88

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Solution

The fourth proportional to 31,737.84, 43,798.17 and 18,308.88 is: 25,266.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,737.84 : 43,798.17 = 18,308.88 : x
  2. Step 2: Convert to fraction form
    31,737.84/43,798.17 = 18,308.88/x
  3. Step 3: Cross multiply
    31,737.84x = 43,798.17 × 18,308.88
  4. Step 4: Simplify right side
    31,737.84x = 801,895,438.75
  5. Step 5: Solve for x
    x = 801,895,438.75/31,737.84
  6. Step 6: Final answer
    x = 25,266.23

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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.