Home / 12,229.80-18,344.70-10,188.60

Finding the Fourth Proportional to 12,229.80, 18,344.70 and 10,188.60

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Solution

The fourth proportional to 12,229.80, 18,344.70 and 10,188.60 is: 15,282.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,229.80 : 18,344.70 = 10,188.60 : x
  2. Step 2: Convert to fraction form
    12,229.80/18,344.70 = 10,188.60/x
  3. Step 3: Cross multiply
    12,229.80x = 18,344.70 × 10,188.60
  4. Step 4: Simplify right side
    12,229.80x = 186,906,810.42
  5. Step 5: Solve for x
    x = 186,906,810.42/12,229.80
  6. Step 6: Final answer
    x = 15,282.90

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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.