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Finding the Fourth Proportional to 29,170.50, 40,255.29 and 15,922.50

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Solution

The fourth proportional to 29,170.50, 40,255.29 and 15,922.50 is: 21,973.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,170.50 : 40,255.29 = 15,922.50 : x
  2. Step 2: Convert to fraction form
    29,170.50/40,255.29 = 15,922.50/x
  3. Step 3: Cross multiply
    29,170.50x = 40,255.29 × 15,922.50
  4. Step 4: Simplify right side
    29,170.50x = 640,964,855.03
  5. Step 5: Solve for x
    x = 640,964,855.03/29,170.50
  6. Step 6: Final answer
    x = 21,973.05

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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.