Home / 12,387.74-18,581.58-4,388.43

Finding the Fourth Proportional to 12,387.74, 18,581.58 and 4,388.43

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Solution

The fourth proportional to 12,387.74, 18,581.58 and 4,388.43 is: 6,582.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,387.74 : 18,581.58 = 4,388.43 : x
  2. Step 2: Convert to fraction form
    12,387.74/18,581.58 = 4,388.43/x
  3. Step 3: Cross multiply
    12,387.74x = 18,581.58 × 4,388.43
  4. Step 4: Simplify right side
    12,387.74x = 81,543,963.12
  5. Step 5: Solve for x
    x = 81,543,963.12/12,387.74
  6. Step 6: Final answer
    x = 6,582.63

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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.