Home / 11,781.92-16,258.77-6,404.21

Finding the Fourth Proportional to 11,781.92, 16,258.77 and 6,404.21

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Solution

The fourth proportional to 11,781.92, 16,258.77 and 6,404.21 is: 8,837.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,781.92 : 16,258.77 = 6,404.21 : x
  2. Step 2: Convert to fraction form
    11,781.92/16,258.77 = 6,404.21/x
  3. Step 3: Cross multiply
    11,781.92x = 16,258.77 × 6,404.21
  4. Step 4: Simplify right side
    11,781.92x = 104,124,557.10
  5. Step 5: Solve for x
    x = 104,124,557.10/11,781.92
  6. Step 6: Final answer
    x = 8,837.65

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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.