Home / 12,682.20-18,949.92-9,155.46

Finding the Fourth Proportional to 12,682.20, 18,949.92 and 9,155.46

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Solution

The fourth proportional to 12,682.20, 18,949.92 and 9,155.46 is: 13,680.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,682.20 : 18,949.92 = 9,155.46 : x
  2. Step 2: Convert to fraction form
    12,682.20/18,949.92 = 9,155.46/x
  3. Step 3: Cross multiply
    12,682.20x = 18,949.92 × 9,155.46
  4. Step 4: Simplify right side
    12,682.20x = 173,495,234.56
  5. Step 5: Solve for x
    x = 173,495,234.56/12,682.20
  6. Step 6: Final answer
    x = 13,680.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.