Home / 31,790.52-43,860.78-18,360

Finding the Fourth Proportional to 31,790.52, 43,860.78 and 18,360

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Solution

The fourth proportional to 31,790.52, 43,860.78 and 18,360 is: 25,330.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,790.52 : 43,860.78 = 18,360 : x
  2. Step 2: Convert to fraction form
    31,790.52/43,860.78 = 18,360/x
  3. Step 3: Cross multiply
    31,790.52x = 43,860.78 × 18,360
  4. Step 4: Simplify right side
    31,790.52x = 805,283,920.80
  5. Step 5: Solve for x
    x = 805,283,920.80/31,790.52
  6. Step 6: Final answer
    x = 25,330.95

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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.