Home / 18,867.22-28,304.92-5,720.60

Finding the Fourth Proportional to 18,867.22, 28,304.92 and 5,720.60

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Solution

The fourth proportional to 18,867.22, 28,304.92 and 5,720.60 is: 8,582.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,867.22 : 28,304.92 = 5,720.60 : x
  2. Step 2: Convert to fraction form
    18,867.22/28,304.92 = 5,720.60/x
  3. Step 3: Cross multiply
    18,867.22x = 28,304.92 × 5,720.60
  4. Step 4: Simplify right side
    18,867.22x = 161,921,125.35
  5. Step 5: Solve for x
    x = 161,921,125.35/18,867.22
  6. Step 6: Final answer
    x = 8,582.14

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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.