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Finding the Fourth Proportional to 12,243.38, 18,369.18 and 5,223.11

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Solution

The fourth proportional to 12,243.38, 18,369.18 and 5,223.11 is: 7,836.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,243.38 : 18,369.18 = 5,223.11 : x
  2. Step 2: Convert to fraction form
    12,243.38/18,369.18 = 5,223.11/x
  3. Step 3: Cross multiply
    12,243.38x = 18,369.18 × 5,223.11
  4. Step 4: Simplify right side
    12,243.38x = 95,944,155.90
  5. Step 5: Solve for x
    x = 95,944,155.90/12,243.38
  6. Step 6: Final answer
    x = 7,836.41

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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.