Home / 12,225.20-18,347.03-8,474.87

Finding the Fourth Proportional to 12,225.20, 18,347.03 and 8,474.87

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Solution

The fourth proportional to 12,225.20, 18,347.03 and 8,474.87 is: 12,718.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,225.20 : 18,347.03 = 8,474.87 : x
  2. Step 2: Convert to fraction form
    12,225.20/18,347.03 = 8,474.87/x
  3. Step 3: Cross multiply
    12,225.20x = 18,347.03 × 8,474.87
  4. Step 4: Simplify right side
    12,225.20x = 155,488,560.03
  5. Step 5: Solve for x
    x = 155,488,560.03/12,225.20
  6. Step 6: Final answer
    x = 12,718.70

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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.