Home / 12,778.30-19,167.52-4,458.28

Finding the Fourth Proportional to 12,778.30, 19,167.52 and 4,458.28

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Solution

The fourth proportional to 12,778.30, 19,167.52 and 4,458.28 is: 6,687.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,778.30 : 19,167.52 = 4,458.28 : x
  2. Step 2: Convert to fraction form
    12,778.30/19,167.52 = 4,458.28/x
  3. Step 3: Cross multiply
    12,778.30x = 19,167.52 × 4,458.28
  4. Step 4: Simplify right side
    12,778.30x = 85,454,171.07
  5. Step 5: Solve for x
    x = 85,454,171.07/12,778.30
  6. Step 6: Final answer
    x = 6,687.44

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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.