Home / 10,381.11-15,565.68-7,098.18

Finding the Fourth Proportional to 10,381.11, 15,565.68 and 7,098.18

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Solution

The fourth proportional to 10,381.11, 15,565.68 and 7,098.18 is: 10,643.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,381.11 : 15,565.68 = 7,098.18 : x
  2. Step 2: Convert to fraction form
    10,381.11/15,565.68 = 7,098.18/x
  3. Step 3: Cross multiply
    10,381.11x = 15,565.68 × 7,098.18
  4. Step 4: Simplify right side
    10,381.11x = 110,487,998.46
  5. Step 5: Solve for x
    x = 110,487,998.46/10,381.11
  6. Step 6: Final answer
    x = 10,643.18

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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.