Home / 12,243.72-18,363.78-3,478.44

Finding the Fourth Proportional to 12,243.72, 18,363.78 and 3,478.44

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Solution

The fourth proportional to 12,243.72, 18,363.78 and 3,478.44 is: 5,217.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,243.72 : 18,363.78 = 3,478.44 : x
  2. Step 2: Convert to fraction form
    12,243.72/18,363.78 = 3,478.44/x
  3. Step 3: Cross multiply
    12,243.72x = 18,363.78 × 3,478.44
  4. Step 4: Simplify right side
    12,243.72x = 63,877,306.90
  5. Step 5: Solve for x
    x = 63,877,306.90/12,243.72
  6. Step 6: Final answer
    x = 5,217.15

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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.