Home / 10,712.38-16,078.95-5,169.62

Finding the Fourth Proportional to 10,712.38, 16,078.95 and 5,169.62

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Solution

The fourth proportional to 10,712.38, 16,078.95 and 5,169.62 is: 7,759.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,712.38 : 16,078.95 = 5,169.62 : x
  2. Step 2: Convert to fraction form
    10,712.38/16,078.95 = 5,169.62/x
  3. Step 3: Cross multiply
    10,712.38x = 16,078.95 × 5,169.62
  4. Step 4: Simplify right side
    10,712.38x = 83,121,955.26
  5. Step 5: Solve for x
    x = 83,121,955.26/10,712.38
  6. Step 6: Final answer
    x = 7,759.43

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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.