Home / 10,252.42-15,379.05-5,318.89

Finding the Fourth Proportional to 10,252.42, 15,379.05 and 5,318.89

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Solution

The fourth proportional to 10,252.42, 15,379.05 and 5,318.89 is: 7,978.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,252.42 : 15,379.05 = 5,318.89 : x
  2. Step 2: Convert to fraction form
    10,252.42/15,379.05 = 5,318.89/x
  3. Step 3: Cross multiply
    10,252.42x = 15,379.05 × 5,318.89
  4. Step 4: Simplify right side
    10,252.42x = 81,799,475.25
  5. Step 5: Solve for x
    x = 81,799,475.25/10,252.42
  6. Step 6: Final answer
    x = 7,978.55

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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.