Home / 11,781.20-16,258.17-6,403.66

Finding the Fourth Proportional to 11,781.20, 16,258.17 and 6,403.66

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Solution

The fourth proportional to 11,781.20, 16,258.17 and 6,403.66 is: 8,837.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,781.20 : 16,258.17 = 6,403.66 : x
  2. Step 2: Convert to fraction form
    11,781.20/16,258.17 = 6,403.66/x
  3. Step 3: Cross multiply
    11,781.20x = 16,258.17 × 6,403.66
  4. Step 4: Simplify right side
    11,781.20x = 104,111,740.25
  5. Step 5: Solve for x
    x = 104,111,740.25/11,781.20
  6. Step 6: Final answer
    x = 8,837.11

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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.