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Finding the Fourth Proportional to 15,023.62, 20,734.12 and 8,650.44

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Solution

The fourth proportional to 15,023.62, 20,734.12 and 8,650.44 is: 11,938.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,023.62 : 20,734.12 = 8,650.44 : x
  2. Step 2: Convert to fraction form
    15,023.62/20,734.12 = 8,650.44/x
  3. Step 3: Cross multiply
    15,023.62x = 20,734.12 × 8,650.44
  4. Step 4: Simplify right side
    15,023.62x = 179,359,261.01
  5. Step 5: Solve for x
    x = 179,359,261.01/15,023.62
  6. Step 6: Final answer
    x = 11,938.48

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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.