Home / 12,223.40-18,318.90-10,830.20

Finding the Fourth Proportional to 12,223.40, 18,318.90 and 10,830.20

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Solution

The fourth proportional to 12,223.40, 18,318.90 and 10,830.20 is: 16,230.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,223.40 : 18,318.90 = 10,830.20 : x
  2. Step 2: Convert to fraction form
    12,223.40/18,318.90 = 10,830.20/x
  3. Step 3: Cross multiply
    12,223.40x = 18,318.90 × 10,830.20
  4. Step 4: Simplify right side
    12,223.40x = 198,397,350.78
  5. Step 5: Solve for x
    x = 198,397,350.78/12,223.40
  6. Step 6: Final answer
    x = 16,230.95

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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.