Home / 12,439.92-17,167.40-6,775.08

Finding the Fourth Proportional to 12,439.92, 17,167.40 and 6,775.08

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Solution

The fourth proportional to 12,439.92, 17,167.40 and 6,775.08 is: 9,349.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,439.92 : 17,167.40 = 6,775.08 : x
  2. Step 2: Convert to fraction form
    12,439.92/17,167.40 = 6,775.08/x
  3. Step 3: Cross multiply
    12,439.92x = 17,167.40 × 6,775.08
  4. Step 4: Simplify right side
    12,439.92x = 116,310,508.39
  5. Step 5: Solve for x
    x = 116,310,508.39/12,439.92
  6. Step 6: Final answer
    x = 9,349.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.