Home / 14,817.92-20,433.12-9,219.20

Finding the Fourth Proportional to 14,817.92, 20,433.12 and 9,219.20

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Solution

The fourth proportional to 14,817.92, 20,433.12 and 9,219.20 is: 12,712.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,817.92 : 20,433.12 = 9,219.20 : x
  2. Step 2: Convert to fraction form
    14,817.92/20,433.12 = 9,219.20/x
  3. Step 3: Cross multiply
    14,817.92x = 20,433.12 × 9,219.20
  4. Step 4: Simplify right side
    14,817.92x = 188,377,019.90
  5. Step 5: Solve for x
    x = 188,377,019.90/14,817.92
  6. Step 6: Final answer
    x = 12,712.78

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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.