Home / 20,493.20-28,265.46-12,528.92

Finding the Fourth Proportional to 20,493.20, 28,265.46 and 12,528.92

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Solution

The fourth proportional to 20,493.20, 28,265.46 and 12,528.92 is: 17,280.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,493.20 : 28,265.46 = 12,528.92 : x
  2. Step 2: Convert to fraction form
    20,493.20/28,265.46 = 12,528.92/x
  3. Step 3: Cross multiply
    20,493.20x = 28,265.46 × 12,528.92
  4. Step 4: Simplify right side
    20,493.20x = 354,135,687.10
  5. Step 5: Solve for x
    x = 354,135,687.10/20,493.20
  6. Step 6: Final answer
    x = 17,280.64

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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.