Home / 21,715.29-32,540.13-16,142.49

Finding the Fourth Proportional to 21,715.29, 32,540.13 and 16,142.49

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Solution

The fourth proportional to 21,715.29, 32,540.13 and 16,142.49 is: 24,189.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,715.29 : 32,540.13 = 16,142.49 : x
  2. Step 2: Convert to fraction form
    21,715.29/32,540.13 = 16,142.49/x
  3. Step 3: Cross multiply
    21,715.29x = 32,540.13 × 16,142.49
  4. Step 4: Simplify right side
    21,715.29x = 525,278,723.12
  5. Step 5: Solve for x
    x = 525,278,723.12/21,715.29
  6. Step 6: Final answer
    x = 24,189.35

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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.