Home / 12,711.62-17,531.64-8,947.25

Finding the Fourth Proportional to 12,711.62, 17,531.64 and 8,947.25

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Solution

The fourth proportional to 12,711.62, 17,531.64 and 8,947.25 is: 12,339.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,711.62 : 17,531.64 = 8,947.25 : x
  2. Step 2: Convert to fraction form
    12,711.62/17,531.64 = 8,947.25/x
  3. Step 3: Cross multiply
    12,711.62x = 17,531.64 × 8,947.25
  4. Step 4: Simplify right side
    12,711.62x = 156,859,965.99
  5. Step 5: Solve for x
    x = 156,859,965.99/12,711.62
  6. Step 6: Final answer
    x = 12,339.89

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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.