Home / 28,517.28-42,740.28-13,722.23

Finding the Fourth Proportional to 28,517.28, 42,740.28 and 13,722.23

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Solution

The fourth proportional to 28,517.28, 42,740.28 and 13,722.23 is: 20,566.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,517.28 : 42,740.28 = 13,722.23 : x
  2. Step 2: Convert to fraction form
    28,517.28/42,740.28 = 13,722.23/x
  3. Step 3: Cross multiply
    28,517.28x = 42,740.28 × 13,722.23
  4. Step 4: Simplify right side
    28,517.28x = 586,491,738.72
  5. Step 5: Solve for x
    x = 586,491,738.72/28,517.28
  6. Step 6: Final answer
    x = 20,566.19

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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.