Home / 40,639.80-60,939.54-12,934.20

Finding the Fourth Proportional to 40,639.80, 60,939.54 and 12,934.20

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Solution

The fourth proportional to 40,639.80, 60,939.54 and 12,934.20 is: 19,394.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,639.80 : 60,939.54 = 12,934.20 : x
  2. Step 2: Convert to fraction form
    40,639.80/60,939.54 = 12,934.20/x
  3. Step 3: Cross multiply
    40,639.80x = 60,939.54 × 12,934.20
  4. Step 4: Simplify right side
    40,639.80x = 788,204,198.27
  5. Step 5: Solve for x
    x = 788,204,198.27/40,639.80
  6. Step 6: Final answer
    x = 19,394.88

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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.