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Finding the Fourth Proportional to 26,115.20, 39,115.20 and 22,659.20

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Solution

The fourth proportional to 26,115.20, 39,115.20 and 22,659.20 is: 33,938.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,115.20 : 39,115.20 = 22,659.20 : x
  2. Step 2: Convert to fraction form
    26,115.20/39,115.20 = 22,659.20/x
  3. Step 3: Cross multiply
    26,115.20x = 39,115.20 × 22,659.20
  4. Step 4: Simplify right side
    26,115.20x = 886,319,139.84
  5. Step 5: Solve for x
    x = 886,319,139.84/26,115.20
  6. Step 6: Final answer
    x = 33,938.82

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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.