Home / 12,391.17-18,581.68-6,148.90

Finding the Fourth Proportional to 12,391.17, 18,581.68 and 6,148.90

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Solution

The fourth proportional to 12,391.17, 18,581.68 and 6,148.90 is: 9,220.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,391.17 : 18,581.68 = 6,148.90 : x
  2. Step 2: Convert to fraction form
    12,391.17/18,581.68 = 6,148.90/x
  3. Step 3: Cross multiply
    12,391.17x = 18,581.68 × 6,148.90
  4. Step 4: Simplify right side
    12,391.17x = 114,256,892.15
  5. Step 5: Solve for x
    x = 114,256,892.15/12,391.17
  6. Step 6: Final answer
    x = 9,220.83

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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.