Home / 13,255.20-19,915.20-9,974.70

Finding the Fourth Proportional to 13,255.20, 19,915.20 and 9,974.70

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Solution

The fourth proportional to 13,255.20, 19,915.20 and 9,974.70 is: 14,986.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,255.20 : 19,915.20 = 9,974.70 : x
  2. Step 2: Convert to fraction form
    13,255.20/19,915.20 = 9,974.70/x
  3. Step 3: Cross multiply
    13,255.20x = 19,915.20 × 9,974.70
  4. Step 4: Simplify right side
    13,255.20x = 198,648,145.44
  5. Step 5: Solve for x
    x = 198,648,145.44/13,255.20
  6. Step 6: Final answer
    x = 14,986.43

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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.