Home / 13,909.60-20,867.52-5,144.80

Finding the Fourth Proportional to 13,909.60, 20,867.52 and 5,144.80

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Solution

The fourth proportional to 13,909.60, 20,867.52 and 5,144.80 is: 7,718.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,909.60 : 20,867.52 = 5,144.80 : x
  2. Step 2: Convert to fraction form
    13,909.60/20,867.52 = 5,144.80/x
  3. Step 3: Cross multiply
    13,909.60x = 20,867.52 × 5,144.80
  4. Step 4: Simplify right side
    13,909.60x = 107,359,216.90
  5. Step 5: Solve for x
    x = 107,359,216.90/13,909.60
  6. Step 6: Final answer
    x = 7,718.35

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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.