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Finding the Fourth Proportional to 25,578.88, 35,302.08 and 15,508.96

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Solution

The fourth proportional to 25,578.88, 35,302.08 and 15,508.96 is: 21,404.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,578.88 : 35,302.08 = 15,508.96 : x
  2. Step 2: Convert to fraction form
    25,578.88/35,302.08 = 15,508.96/x
  3. Step 3: Cross multiply
    25,578.88x = 35,302.08 × 15,508.96
  4. Step 4: Simplify right side
    25,578.88x = 547,498,546.64
  5. Step 5: Solve for x
    x = 547,498,546.64/25,578.88
  6. Step 6: Final answer
    x = 21,404.32

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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.