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Finding the Fourth Proportional to 12,233.90, 18,354.90 and 3,915.20

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Solution

The fourth proportional to 12,233.90, 18,354.90 and 3,915.20 is: 5,874.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,233.90 : 18,354.90 = 3,915.20 : x
  2. Step 2: Convert to fraction form
    12,233.90/18,354.90 = 3,915.20/x
  3. Step 3: Cross multiply
    12,233.90x = 18,354.90 × 3,915.20
  4. Step 4: Simplify right side
    12,233.90x = 71,863,104.48
  5. Step 5: Solve for x
    x = 71,863,104.48/12,233.90
  6. Step 6: Final answer
    x = 5,874.10

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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.