Home / 31,718.82-43,760.70-18,963.12

Finding the Fourth Proportional to 31,718.82, 43,760.70 and 18,963.12

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Solution

The fourth proportional to 31,718.82, 43,760.70 and 18,963.12 is: 26,162.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,718.82 : 43,760.70 = 18,963.12 : x
  2. Step 2: Convert to fraction form
    31,718.82/43,760.70 = 18,963.12/x
  3. Step 3: Cross multiply
    31,718.82x = 43,760.70 × 18,963.12
  4. Step 4: Simplify right side
    31,718.82x = 829,839,405.38
  5. Step 5: Solve for x
    x = 829,839,405.38/31,718.82
  6. Step 6: Final answer
    x = 26,162.37

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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.