Home / 11,873.09-16,387.13-8,479.31

Finding the Fourth Proportional to 11,873.09, 16,387.13 and 8,479.31

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Solution

The fourth proportional to 11,873.09, 16,387.13 and 8,479.31 is: 11,703.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,873.09 : 16,387.13 = 8,479.31 : x
  2. Step 2: Convert to fraction form
    11,873.09/16,387.13 = 8,479.31/x
  3. Step 3: Cross multiply
    11,873.09x = 16,387.13 × 8,479.31
  4. Step 4: Simplify right side
    11,873.09x = 138,951,494.54
  5. Step 5: Solve for x
    x = 138,951,494.54/11,873.09
  6. Step 6: Final answer
    x = 11,703.07

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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.