Home / 13,402.60-20,103.90-8,477.80

Finding the Fourth Proportional to 13,402.60, 20,103.90 and 8,477.80

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Solution

The fourth proportional to 13,402.60, 20,103.90 and 8,477.80 is: 12,716.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,402.60 : 20,103.90 = 8,477.80 : x
  2. Step 2: Convert to fraction form
    13,402.60/20,103.90 = 8,477.80/x
  3. Step 3: Cross multiply
    13,402.60x = 20,103.90 × 8,477.80
  4. Step 4: Simplify right side
    13,402.60x = 170,436,843.42
  5. Step 5: Solve for x
    x = 170,436,843.42/13,402.60
  6. Step 6: Final answer
    x = 12,716.70

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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.