Home / 11,145.59-16,709.17-8,691.29

Finding the Fourth Proportional to 11,145.59, 16,709.17 and 8,691.29

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Solution

The fourth proportional to 11,145.59, 16,709.17 and 8,691.29 is: 13,029.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,145.59 : 16,709.17 = 8,691.29 : x
  2. Step 2: Convert to fraction form
    11,145.59/16,709.17 = 8,691.29/x
  3. Step 3: Cross multiply
    11,145.59x = 16,709.17 × 8,691.29
  4. Step 4: Simplify right side
    11,145.59x = 145,224,242.13
  5. Step 5: Solve for x
    x = 145,224,242.13/11,145.59
  6. Step 6: Final answer
    x = 13,029.75

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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.