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Finding the Fourth Proportional to 17,043.80, 25,565.70 and 11,138.90

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Solution

The fourth proportional to 17,043.80, 25,565.70 and 11,138.90 is: 16,708.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,043.80 : 25,565.70 = 11,138.90 : x
  2. Step 2: Convert to fraction form
    17,043.80/25,565.70 = 11,138.90/x
  3. Step 3: Cross multiply
    17,043.80x = 25,565.70 × 11,138.90
  4. Step 4: Simplify right side
    17,043.80x = 284,773,775.73
  5. Step 5: Solve for x
    x = 284,773,775.73/17,043.80
  6. Step 6: Final answer
    x = 16,708.35

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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.