Home / 13,445.25-20,167.88-6,403.92

Finding the Fourth Proportional to 13,445.25, 20,167.88 and 6,403.92

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Solution

The fourth proportional to 13,445.25, 20,167.88 and 6,403.92 is: 9,605.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,445.25 : 20,167.88 = 6,403.92 : x
  2. Step 2: Convert to fraction form
    13,445.25/20,167.88 = 6,403.92/x
  3. Step 3: Cross multiply
    13,445.25x = 20,167.88 × 6,403.92
  4. Step 4: Simplify right side
    13,445.25x = 129,153,458.07
  5. Step 5: Solve for x
    x = 129,153,458.07/13,445.25
  6. Step 6: Final answer
    x = 9,605.88

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Similar ratio
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1.5x scale

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.