Home / 20,673.18-28,531.11-12,177.98

Finding the Fourth Proportional to 20,673.18, 28,531.11 and 12,177.98

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Solution

The fourth proportional to 20,673.18, 28,531.11 and 12,177.98 is: 16,806.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,673.18 : 28,531.11 = 12,177.98 : x
  2. Step 2: Convert to fraction form
    20,673.18/28,531.11 = 12,177.98/x
  3. Step 3: Cross multiply
    20,673.18x = 28,531.11 × 12,177.98
  4. Step 4: Simplify right side
    20,673.18x = 347,451,358.29
  5. Step 5: Solve for x
    x = 347,451,358.29/20,673.18
  6. Step 6: Final answer
    x = 16,806.87

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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.