Home / 20,654.57-28,503.42-12,157.01

Finding the Fourth Proportional to 20,654.57, 28,503.42 and 12,157.01

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Solution

The fourth proportional to 20,654.57, 28,503.42 and 12,157.01 is: 16,776.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,654.57 : 28,503.42 = 12,157.01 : x
  2. Step 2: Convert to fraction form
    20,654.57/28,503.42 = 12,157.01/x
  3. Step 3: Cross multiply
    20,654.57x = 28,503.42 × 12,157.01
  4. Step 4: Simplify right side
    20,654.57x = 346,516,361.97
  5. Step 5: Solve for x
    x = 346,516,361.97/20,654.57
  6. Step 6: Final answer
    x = 16,776.74

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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.