Home / 21,438.38-32,157.57-8,951.61

Finding the Fourth Proportional to 21,438.38, 32,157.57 and 8,951.61

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Solution

The fourth proportional to 21,438.38, 32,157.57 and 8,951.61 is: 13,427.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,438.38 : 32,157.57 = 8,951.61 : x
  2. Step 2: Convert to fraction form
    21,438.38/32,157.57 = 8,951.61/x
  3. Step 3: Cross multiply
    21,438.38x = 32,157.57 × 8,951.61
  4. Step 4: Simplify right side
    21,438.38x = 287,862,025.19
  5. Step 5: Solve for x
    x = 287,862,025.19/21,438.38
  6. Step 6: Final answer
    x = 13,427.42

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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.