Home / 12,387.24-18,581.70-3,622.20

Finding the Fourth Proportional to 12,387.24, 18,581.70 and 3,622.20

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Solution

The fourth proportional to 12,387.24, 18,581.70 and 3,622.20 is: 5,433.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,387.24 : 18,581.70 = 3,622.20 : x
  2. Step 2: Convert to fraction form
    12,387.24/18,581.70 = 3,622.20/x
  3. Step 3: Cross multiply
    12,387.24x = 18,581.70 × 3,622.20
  4. Step 4: Simplify right side
    12,387.24x = 67,306,633.74
  5. Step 5: Solve for x
    x = 67,306,633.74/12,387.24
  6. Step 6: Final answer
    x = 5,433.55

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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.