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Finding the Fourth Proportional to 13,691.97, 18,895.05 and 8,030.07

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Solution

The fourth proportional to 13,691.97, 18,895.05 and 8,030.07 is: 11,081.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,691.97 : 18,895.05 = 8,030.07 : x
  2. Step 2: Convert to fraction form
    13,691.97/18,895.05 = 8,030.07/x
  3. Step 3: Cross multiply
    13,691.97x = 18,895.05 × 8,030.07
  4. Step 4: Simplify right side
    13,691.97x = 151,728,574.15
  5. Step 5: Solve for x
    x = 151,728,574.15/13,691.97
  6. Step 6: Final answer
    x = 11,081.57

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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.