Home / 31,382.49-43,291.77-20,040.06

Finding the Fourth Proportional to 31,382.49, 43,291.77 and 20,040.06

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Solution

The fourth proportional to 31,382.49, 43,291.77 and 20,040.06 is: 27,645.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,382.49 : 43,291.77 = 20,040.06 : x
  2. Step 2: Convert to fraction form
    31,382.49/43,291.77 = 20,040.06/x
  3. Step 3: Cross multiply
    31,382.49x = 43,291.77 × 20,040.06
  4. Step 4: Simplify right side
    31,382.49x = 867,569,511.98
  5. Step 5: Solve for x
    x = 867,569,511.98/31,382.49
  6. Step 6: Final answer
    x = 27,645.02

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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.