Home / 10,487.04-15,691.78-9,231.72

Finding the Fourth Proportional to 10,487.04, 15,691.78 and 9,231.72

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Solution

The fourth proportional to 10,487.04, 15,691.78 and 9,231.72 is: 13,813.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,487.04 : 15,691.78 = 9,231.72 : x
  2. Step 2: Convert to fraction form
    10,487.04/15,691.78 = 9,231.72/x
  3. Step 3: Cross multiply
    10,487.04x = 15,691.78 × 9,231.72
  4. Step 4: Simplify right side
    10,487.04x = 144,862,119.26
  5. Step 5: Solve for x
    x = 144,862,119.26/10,487.04
  6. Step 6: Final answer
    x = 13,813.44

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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.