Home / 12,145.20-18,222.12-5,224.56

Finding the Fourth Proportional to 12,145.20, 18,222.12 and 5,224.56

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Solution

The fourth proportional to 12,145.20, 18,222.12 and 5,224.56 is: 7,838.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,145.20 : 18,222.12 = 5,224.56 : x
  2. Step 2: Convert to fraction form
    12,145.20/18,222.12 = 5,224.56/x
  3. Step 3: Cross multiply
    12,145.20x = 18,222.12 × 5,224.56
  4. Step 4: Simplify right side
    12,145.20x = 95,202,559.27
  5. Step 5: Solve for x
    x = 95,202,559.27/12,145.20
  6. Step 6: Final answer
    x = 7,838.70

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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.