Home / 21,438.27-32,154.57-13,517.28

Finding the Fourth Proportional to 21,438.27, 32,154.57 and 13,517.28

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Solution

The fourth proportional to 21,438.27, 32,154.57 and 13,517.28 is: 20,274.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,438.27 : 32,154.57 = 13,517.28 : x
  2. Step 2: Convert to fraction form
    21,438.27/32,154.57 = 13,517.28/x
  3. Step 3: Cross multiply
    21,438.27x = 32,154.57 × 13,517.28
  4. Step 4: Simplify right side
    21,438.27x = 434,642,325.97
  5. Step 5: Solve for x
    x = 434,642,325.97/21,438.27
  6. Step 6: Final answer
    x = 20,274.13

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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.