Home / 11,874.09-16,388.51-8,480.31

Finding the Fourth Proportional to 11,874.09, 16,388.51 and 8,480.31

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Solution

The fourth proportional to 11,874.09, 16,388.51 and 8,480.31 is: 11,704.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,874.09 : 16,388.51 = 8,480.31 : x
  2. Step 2: Convert to fraction form
    11,874.09/16,388.51 = 8,480.31/x
  3. Step 3: Cross multiply
    11,874.09x = 16,388.51 × 8,480.31
  4. Step 4: Simplify right side
    11,874.09x = 138,979,645.24
  5. Step 5: Solve for x
    x = 138,979,645.24/11,874.09
  6. Step 6: Final answer
    x = 11,704.45

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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.