Home / 10,537.38-15,811.53-7,639.61

Finding the Fourth Proportional to 10,537.38, 15,811.53 and 7,639.61

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Solution

The fourth proportional to 10,537.38, 15,811.53 and 7,639.61 is: 11,463.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,537.38 : 15,811.53 = 7,639.61 : x
  2. Step 2: Convert to fraction form
    10,537.38/15,811.53 = 7,639.61/x
  3. Step 3: Cross multiply
    10,537.38x = 15,811.53 × 7,639.61
  4. Step 4: Simplify right side
    10,537.38x = 120,793,843.65
  5. Step 5: Solve for x
    x = 120,793,843.65/10,537.38
  6. Step 6: Final answer
    x = 11,463.37

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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.