Home / 13,951.18-20,930.42-8,102.17

Finding the Fourth Proportional to 13,951.18, 20,930.42 and 8,102.17

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Solution

The fourth proportional to 13,951.18, 20,930.42 and 8,102.17 is: 12,155.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,951.18 : 20,930.42 = 8,102.17 : x
  2. Step 2: Convert to fraction form
    13,951.18/20,930.42 = 8,102.17/x
  3. Step 3: Cross multiply
    13,951.18x = 20,930.42 × 8,102.17
  4. Step 4: Simplify right side
    13,951.18x = 169,581,821.01
  5. Step 5: Solve for x
    x = 169,581,821.01/13,951.18
  6. Step 6: Final answer
    x = 12,155.37

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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.