Home / 12,229.20-18,343.80-7,304.40

Finding the Fourth Proportional to 12,229.20, 18,343.80 and 7,304.40

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Solution

The fourth proportional to 12,229.20, 18,343.80 and 7,304.40 is: 10,956.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,229.20 : 18,343.80 = 7,304.40 : x
  2. Step 2: Convert to fraction form
    12,229.20/18,343.80 = 7,304.40/x
  3. Step 3: Cross multiply
    12,229.20x = 18,343.80 × 7,304.40
  4. Step 4: Simplify right side
    12,229.20x = 133,990,452.72
  5. Step 5: Solve for x
    x = 133,990,452.72/12,229.20
  6. Step 6: Final answer
    x = 10,956.60

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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.