Home / 31,786.90-43,865.89-17,639.71

Finding the Fourth Proportional to 31,786.90, 43,865.89 and 17,639.71

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Solution

The fourth proportional to 31,786.90, 43,865.89 and 17,639.71 is: 24,342.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,786.90 : 43,865.89 = 17,639.71 : x
  2. Step 2: Convert to fraction form
    31,786.90/43,865.89 = 17,639.71/x
  3. Step 3: Cross multiply
    31,786.90x = 43,865.89 × 17,639.71
  4. Step 4: Simplify right side
    31,786.90x = 773,781,424.73
  5. Step 5: Solve for x
    x = 773,781,424.73/31,786.90
  6. Step 6: Final answer
    x = 24,342.78

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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.