Home / 12,960.20-19,441.11-5,168.81

Finding the Fourth Proportional to 12,960.20, 19,441.11 and 5,168.81

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Solution

The fourth proportional to 12,960.20, 19,441.11 and 5,168.81 is: 7,753.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,960.20 : 19,441.11 = 5,168.81 : x
  2. Step 2: Convert to fraction form
    12,960.20/19,441.11 = 5,168.81/x
  3. Step 3: Cross multiply
    12,960.20x = 19,441.11 × 5,168.81
  4. Step 4: Simplify right side
    12,960.20x = 100,487,471.76
  5. Step 5: Solve for x
    x = 100,487,471.76/12,960.20
  6. Step 6: Final answer
    x = 7,753.54

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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.