Home / 15,517.10-21,359.51-13,524.20

Finding the Fourth Proportional to 15,517.10, 21,359.51 and 13,524.20

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Solution

The fourth proportional to 15,517.10, 21,359.51 and 13,524.20 is: 18,616.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,517.10 : 21,359.51 = 13,524.20 : x
  2. Step 2: Convert to fraction form
    15,517.10/21,359.51 = 13,524.20/x
  3. Step 3: Cross multiply
    15,517.10x = 21,359.51 × 13,524.20
  4. Step 4: Simplify right side
    15,517.10x = 288,870,110.72
  5. Step 5: Solve for x
    x = 288,870,110.72/15,517.10
  6. Step 6: Final answer
    x = 18,616.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.