Home / 12,237.30-18,357.30-3,915.90

Finding the Fourth Proportional to 12,237.30, 18,357.30 and 3,915.90

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Solution

The fourth proportional to 12,237.30, 18,357.30 and 3,915.90 is: 5,874.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,237.30 : 18,357.30 = 3,915.90 : x
  2. Step 2: Convert to fraction form
    12,237.30/18,357.30 = 3,915.90/x
  3. Step 3: Cross multiply
    12,237.30x = 18,357.30 × 3,915.90
  4. Step 4: Simplify right side
    12,237.30x = 71,885,351.07
  5. Step 5: Solve for x
    x = 71,885,351.07/12,237.30
  6. Step 6: Final answer
    x = 5,874.28

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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.