Home / 31,862.10-43,963.14-18,428.43

Finding the Fourth Proportional to 31,862.10, 43,963.14 and 18,428.43

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Solution

The fourth proportional to 31,862.10, 43,963.14 and 18,428.43 is: 25,427.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,862.10 : 43,963.14 = 18,428.43 : x
  2. Step 2: Convert to fraction form
    31,862.10/43,963.14 = 18,428.43/x
  3. Step 3: Cross multiply
    31,862.10x = 43,963.14 × 18,428.43
  4. Step 4: Simplify right side
    31,862.10x = 810,171,648.07
  5. Step 5: Solve for x
    x = 810,171,648.07/31,862.10
  6. Step 6: Final answer
    x = 25,427.44

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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.