Home / 10,631.20-14,691.29-7,974.00

Finding the Fourth Proportional to 10,631.20, 14,691.29 and 7,974.00

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Solution

The fourth proportional to 10,631.20, 14,691.29 and 7,974.00 is: 11,019.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,631.20 : 14,691.29 = 7,974.00 : x
  2. Step 2: Convert to fraction form
    10,631.20/14,691.29 = 7,974.00/x
  3. Step 3: Cross multiply
    10,631.20x = 14,691.29 × 7,974.00
  4. Step 4: Simplify right side
    10,631.20x = 117,148,233.13
  5. Step 5: Solve for x
    x = 117,148,233.13/10,631.20
  6. Step 6: Final answer
    x = 11,019.29

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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.