Home / 42,644.50-63,965.88-18,945.62

Finding the Fourth Proportional to 42,644.50, 63,965.88 and 18,945.62

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Solution

The fourth proportional to 42,644.50, 63,965.88 and 18,945.62 is: 28,418.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,644.50 : 63,965.88 = 18,945.62 : x
  2. Step 2: Convert to fraction form
    42,644.50/63,965.88 = 18,945.62/x
  3. Step 3: Cross multiply
    42,644.50x = 63,965.88 × 18,945.62
  4. Step 4: Simplify right side
    42,644.50x = 1,211,873,600.80
  5. Step 5: Solve for x
    x = 1,211,873,600.80/42,644.50
  6. Step 6: Final answer
    x = 28,418.05

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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.