Home / 12,789.46-19,184.19-4,892.78

Finding the Fourth Proportional to 12,789.46, 19,184.19 and 4,892.78

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Solution

The fourth proportional to 12,789.46, 19,184.19 and 4,892.78 is: 7,339.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,789.46 : 19,184.19 = 4,892.78 : x
  2. Step 2: Convert to fraction form
    12,789.46/19,184.19 = 4,892.78/x
  3. Step 3: Cross multiply
    12,789.46x = 19,184.19 × 4,892.78
  4. Step 4: Simplify right side
    12,789.46x = 93,864,021.15
  5. Step 5: Solve for x
    x = 93,864,021.15/12,789.46
  6. Step 6: Final answer
    x = 7,339.17

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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.