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Finding the Fourth Proportional to 21,449.28, 32,172.28 and 5,868.12

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Solution

The fourth proportional to 21,449.28, 32,172.28 and 5,868.12 is: 8,801.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,449.28 : 32,172.28 = 5,868.12 : x
  2. Step 2: Convert to fraction form
    21,449.28/32,172.28 = 5,868.12/x
  3. Step 3: Cross multiply
    21,449.28x = 32,172.28 × 5,868.12
  4. Step 4: Simplify right side
    21,449.28x = 188,790,799.71
  5. Step 5: Solve for x
    x = 188,790,799.71/21,449.28
  6. Step 6: Final answer
    x = 8,801.73

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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.