Home / 31,721.19-43,745.04-18,972.29

Finding the Fourth Proportional to 31,721.19, 43,745.04 and 18,972.29

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Solution

The fourth proportional to 31,721.19, 43,745.04 and 18,972.29 is: 26,163.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,721.19 : 43,745.04 = 18,972.29 : x
  2. Step 2: Convert to fraction form
    31,721.19/43,745.04 = 18,972.29/x
  3. Step 3: Cross multiply
    31,721.19x = 43,745.04 × 18,972.29
  4. Step 4: Simplify right side
    31,721.19x = 829,943,366.22
  5. Step 5: Solve for x
    x = 829,943,366.22/31,721.19
  6. Step 6: Final answer
    x = 26,163.69

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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.