Home / 20,326.02-28,049.13-11,372.69

Finding the Fourth Proportional to 20,326.02, 28,049.13 and 11,372.69

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Solution

The fourth proportional to 20,326.02, 28,049.13 and 11,372.69 is: 15,693.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,326.02 : 28,049.13 = 11,372.69 : x
  2. Step 2: Convert to fraction form
    20,326.02/28,049.13 = 11,372.69/x
  3. Step 3: Cross multiply
    20,326.02x = 28,049.13 × 11,372.69
  4. Step 4: Simplify right side
    20,326.02x = 318,993,920.01
  5. Step 5: Solve for x
    x = 318,993,920.01/20,326.02
  6. Step 6: Final answer
    x = 15,693.87

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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.