Home / 20,321.43-28,045.25-11,369.77

Finding the Fourth Proportional to 20,321.43, 28,045.25 and 11,369.77

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Solution

The fourth proportional to 20,321.43, 28,045.25 and 11,369.77 is: 15,691.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,321.43 : 28,045.25 = 11,369.77 : x
  2. Step 2: Convert to fraction form
    20,321.43/28,045.25 = 11,369.77/x
  3. Step 3: Cross multiply
    20,321.43x = 28,045.25 × 11,369.77
  4. Step 4: Simplify right side
    20,321.43x = 318,867,930.29
  5. Step 5: Solve for x
    x = 318,867,930.29/20,321.43
  6. Step 6: Final answer
    x = 15,691.22

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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.