Home / 13,934.97-20,911.13-8,680.30

Finding the Fourth Proportional to 13,934.97, 20,911.13 and 8,680.30

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Solution

The fourth proportional to 13,934.97, 20,911.13 and 8,680.30 is: 13,025.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,934.97 : 20,911.13 = 8,680.30 : x
  2. Step 2: Convert to fraction form
    13,934.97/20,911.13 = 8,680.30/x
  3. Step 3: Cross multiply
    13,934.97x = 20,911.13 × 8,680.30
  4. Step 4: Simplify right side
    13,934.97x = 181,514,818.61
  5. Step 5: Solve for x
    x = 181,514,818.61/13,934.97
  6. Step 6: Final answer
    x = 13,025.85

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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.