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Finding the Fourth Proportional to 28,337.97, 42,468.08 and 17,931.09

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Solution

The fourth proportional to 28,337.97, 42,468.08 and 17,931.09 is: 26,872.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,337.97 : 42,468.08 = 17,931.09 : x
  2. Step 2: Convert to fraction form
    28,337.97/42,468.08 = 17,931.09/x
  3. Step 3: Cross multiply
    28,337.97x = 42,468.08 × 17,931.09
  4. Step 4: Simplify right side
    28,337.97x = 761,498,874.95
  5. Step 5: Solve for x
    x = 761,498,874.95/28,337.97
  6. Step 6: Final answer
    x = 26,872.03

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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.