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Finding the Fourth Proportional to 42,433.80, 63,650.70 and 10,843.80

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Solution

The fourth proportional to 42,433.80, 63,650.70 and 10,843.80 is: 16,265.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,433.80 : 63,650.70 = 10,843.80 : x
  2. Step 2: Convert to fraction form
    42,433.80/63,650.70 = 10,843.80/x
  3. Step 3: Cross multiply
    42,433.80x = 63,650.70 × 10,843.80
  4. Step 4: Simplify right side
    42,433.80x = 690,215,460.66
  5. Step 5: Solve for x
    x = 690,215,460.66/42,433.80
  6. Step 6: Final answer
    x = 16,265.70

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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.