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Finding the Fourth Proportional to 38,449.60, 57,700.50 and 13,489.44

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Solution

The fourth proportional to 38,449.60, 57,700.50 and 13,489.44 is: 20,243.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,449.60 : 57,700.50 = 13,489.44 : x
  2. Step 2: Convert to fraction form
    38,449.60/57,700.50 = 13,489.44/x
  3. Step 3: Cross multiply
    38,449.60x = 57,700.50 × 13,489.44
  4. Step 4: Simplify right side
    38,449.60x = 778,347,432.72
  5. Step 5: Solve for x
    x = 778,347,432.72/38,449.60
  6. Step 6: Final answer
    x = 20,243.32

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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.