Home / 12,851.20-19,276.80-4,641.28

Finding the Fourth Proportional to 12,851.20, 19,276.80 and 4,641.28

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Solution

The fourth proportional to 12,851.20, 19,276.80 and 4,641.28 is: 6,961.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,851.20 : 19,276.80 = 4,641.28 : x
  2. Step 2: Convert to fraction form
    12,851.20/19,276.80 = 4,641.28/x
  3. Step 3: Cross multiply
    12,851.20x = 19,276.80 × 4,641.28
  4. Step 4: Simplify right side
    12,851.20x = 89,469,026.30
  5. Step 5: Solve for x
    x = 89,469,026.30/12,851.20
  6. Step 6: Final answer
    x = 6,961.92

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Similar ratio
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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.