Home / 20,654.60-28,503.45-12,157.04

Finding the Fourth Proportional to 20,654.60, 28,503.45 and 12,157.04

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Solution

The fourth proportional to 20,654.60, 28,503.45 and 12,157.04 is: 16,776.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,654.60 : 28,503.45 = 12,157.04 : x
  2. Step 2: Convert to fraction form
    20,654.60/28,503.45 = 12,157.04/x
  3. Step 3: Cross multiply
    20,654.60x = 28,503.45 × 12,157.04
  4. Step 4: Simplify right side
    20,654.60x = 346,517,581.79
  5. Step 5: Solve for x
    x = 346,517,581.79/20,654.60
  6. Step 6: Final answer
    x = 16,776.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.