Home / 31,420-43,359.69-17,272.95

Finding the Fourth Proportional to 31,420, 43,359.69 and 17,272.95

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Solution

The fourth proportional to 31,420, 43,359.69 and 17,272.95 is: 23,836.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,420 : 43,359.69 = 17,272.95 : x
  2. Step 2: Convert to fraction form
    31,420/43,359.69 = 17,272.95/x
  3. Step 3: Cross multiply
    31,420x = 43,359.69 × 17,272.95
  4. Step 4: Simplify right side
    31,420x = 748,949,757.39
  5. Step 5: Solve for x
    x = 748,949,757.39/31,420
  6. Step 6: Final answer
    x = 23,836.72

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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.