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Finding the Fourth Proportional to 40,427.20, 60,639.48 and 10,843.48

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Solution

The fourth proportional to 40,427.20, 60,639.48 and 10,843.48 is: 16,264.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,427.20 : 60,639.48 = 10,843.48 : x
  2. Step 2: Convert to fraction form
    40,427.20/60,639.48 = 10,843.48/x
  3. Step 3: Cross multiply
    40,427.20x = 60,639.48 × 10,843.48
  4. Step 4: Simplify right side
    40,427.20x = 657,542,988.59
  5. Step 5: Solve for x
    x = 657,542,988.59/40,427.20
  6. Step 6: Final answer
    x = 16,264.87

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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.