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Finding the Fourth Proportional to 24,615.75, 33,969.75 and 15,189.78

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Solution

The fourth proportional to 24,615.75, 33,969.75 and 15,189.78 is: 20,961.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    24,615.75 : 33,969.75 = 15,189.78 : x
  2. Step 2: Convert to fraction form
    24,615.75/33,969.75 = 15,189.78/x
  3. Step 3: Cross multiply
    24,615.75x = 33,969.75 × 15,189.78
  4. Step 4: Simplify right side
    24,615.75x = 515,993,029.16
  5. Step 5: Solve for x
    x = 515,993,029.16/24,615.75
  6. Step 6: Final answer
    x = 20,961.91

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1.5x scale

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.