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Finding the Fourth Proportional to 38,321.34, 57,447.90 and 14,942.40

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Solution

The fourth proportional to 38,321.34, 57,447.90 and 14,942.40 is: 22,400.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,321.34 : 57,447.90 = 14,942.40 : x
  2. Step 2: Convert to fraction form
    38,321.34/57,447.90 = 14,942.40/x
  3. Step 3: Cross multiply
    38,321.34x = 57,447.90 × 14,942.40
  4. Step 4: Simplify right side
    38,321.34x = 858,409,500.96
  5. Step 5: Solve for x
    x = 858,409,500.96/38,321.34
  6. Step 6: Final answer
    x = 22,400.30

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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.