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Finding the Fourth Proportional to 25,615.50, 35,351.72 and 15,546.50

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Solution

The fourth proportional to 25,615.50, 35,351.72 and 15,546.50 is: 21,455.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,615.50 : 35,351.72 = 15,546.50 : x
  2. Step 2: Convert to fraction form
    25,615.50/35,351.72 = 15,546.50/x
  3. Step 3: Cross multiply
    25,615.50x = 35,351.72 × 15,546.50
  4. Step 4: Simplify right side
    25,615.50x = 549,595,514.98
  5. Step 5: Solve for x
    x = 549,595,514.98/25,615.50
  6. Step 6: Final answer
    x = 21,455.58

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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.