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Finding the Fourth Proportional to 23,115.20, 34,672.80 and 22,143.20

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Solution

The fourth proportional to 23,115.20, 34,672.80 and 22,143.20 is: 33,214.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,115.20 : 34,672.80 = 22,143.20 : x
  2. Step 2: Convert to fraction form
    23,115.20/34,672.80 = 22,143.20/x
  3. Step 3: Cross multiply
    23,115.20x = 34,672.80 × 22,143.20
  4. Step 4: Simplify right side
    23,115.20x = 767,766,744.96
  5. Step 5: Solve for x
    x = 767,766,744.96/23,115.20
  6. Step 6: Final answer
    x = 33,214.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.