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Finding the Fourth Proportional to 25,294.90, 34,909.34 and 18,910.44

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Solution

The fourth proportional to 25,294.90, 34,909.34 and 18,910.44 is: 26,098.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,294.90 : 34,909.34 = 18,910.44 : x
  2. Step 2: Convert to fraction form
    25,294.90/34,909.34 = 18,910.44/x
  3. Step 3: Cross multiply
    25,294.90x = 34,909.34 × 18,910.44
  4. Step 4: Simplify right side
    25,294.90x = 660,150,979.51
  5. Step 5: Solve for x
    x = 660,150,979.51/25,294.90
  6. Step 6: Final answer
    x = 26,098.18

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.