Home / 18,867.64-28,301.52-6,387.79

Finding the Fourth Proportional to 18,867.64, 28,301.52 and 6,387.79

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Solution

The fourth proportional to 18,867.64, 28,301.52 and 6,387.79 is: 9,581.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,867.64 : 28,301.52 = 6,387.79 : x
  2. Step 2: Convert to fraction form
    18,867.64/28,301.52 = 6,387.79/x
  3. Step 3: Cross multiply
    18,867.64x = 28,301.52 × 6,387.79
  4. Step 4: Simplify right side
    18,867.64x = 180,784,166.44
  5. Step 5: Solve for x
    x = 180,784,166.44/18,867.64
  6. Step 6: Final answer
    x = 9,581.71

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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.