Home / 12,915.36-19,375.92-4,151.52

Finding the Fourth Proportional to 12,915.36, 19,375.92 and 4,151.52

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Solution

The fourth proportional to 12,915.36, 19,375.92 and 4,151.52 is: 6,228.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,915.36 : 19,375.92 = 4,151.52 : x
  2. Step 2: Convert to fraction form
    12,915.36/19,375.92 = 4,151.52/x
  3. Step 3: Cross multiply
    12,915.36x = 19,375.92 × 4,151.52
  4. Step 4: Simplify right side
    12,915.36x = 80,439,519.40
  5. Step 5: Solve for x
    x = 80,439,519.40/12,915.36
  6. Step 6: Final answer
    x = 6,228.21

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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.