Home / 17,789.78-26,685.12-8,427.60

Finding the Fourth Proportional to 17,789.78, 26,685.12 and 8,427.60

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Solution

The fourth proportional to 17,789.78, 26,685.12 and 8,427.60 is: 12,641.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,789.78 : 26,685.12 = 8,427.60 : x
  2. Step 2: Convert to fraction form
    17,789.78/26,685.12 = 8,427.60/x
  3. Step 3: Cross multiply
    17,789.78x = 26,685.12 × 8,427.60
  4. Step 4: Simplify right side
    17,789.78x = 224,891,517.31
  5. Step 5: Solve for x
    x = 224,891,517.31/17,789.78
  6. Step 6: Final answer
    x = 12,641.62

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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.