Home / 18,665.10-27,969.30-13,711.14

Finding the Fourth Proportional to 18,665.10, 27,969.30 and 13,711.14

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Solution

The fourth proportional to 18,665.10, 27,969.30 and 13,711.14 is: 20,545.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,665.10 : 27,969.30 = 13,711.14 : x
  2. Step 2: Convert to fraction form
    18,665.10/27,969.30 = 13,711.14/x
  3. Step 3: Cross multiply
    18,665.10x = 27,969.30 × 13,711.14
  4. Step 4: Simplify right side
    18,665.10x = 383,490,988.00
  5. Step 5: Solve for x
    x = 383,490,988.00/18,665.10
  6. Step 6: Final answer
    x = 20,545.88

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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.