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Finding the Fourth Proportional to 16,780.80, 25,142.40 and 10,934.40

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Solution

The fourth proportional to 16,780.80, 25,142.40 and 10,934.40 is: 16,382.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,780.80 : 25,142.40 = 10,934.40 : x
  2. Step 2: Convert to fraction form
    16,780.80/25,142.40 = 10,934.40/x
  3. Step 3: Cross multiply
    16,780.80x = 25,142.40 × 10,934.40
  4. Step 4: Simplify right side
    16,780.80x = 274,917,058.56
  5. Step 5: Solve for x
    x = 274,917,058.56/16,780.80
  6. Step 6: Final answer
    x = 16,382.83

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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.