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Finding the Fourth Proportional to 17,781.01, 26,661.93 and 8,876.95

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Solution

The fourth proportional to 17,781.01, 26,661.93 and 8,876.95 is: 13,310.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,781.01 : 26,661.93 = 8,876.95 : x
  2. Step 2: Convert to fraction form
    17,781.01/26,661.93 = 8,876.95/x
  3. Step 3: Cross multiply
    17,781.01x = 26,661.93 × 8,876.95
  4. Step 4: Simplify right side
    17,781.01x = 236,676,619.51
  5. Step 5: Solve for x
    x = 236,676,619.51/17,781.01
  6. Step 6: Final answer
    x = 13,310.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.