Home / 31,342.80-43,244.44-20,171.28

Finding the Fourth Proportional to 31,342.80, 43,244.44 and 20,171.28

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Solution

The fourth proportional to 31,342.80, 43,244.44 and 20,171.28 is: 27,830.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,342.80 : 43,244.44 = 20,171.28 : x
  2. Step 2: Convert to fraction form
    31,342.80/43,244.44 = 20,171.28/x
  3. Step 3: Cross multiply
    31,342.80x = 43,244.44 × 20,171.28
  4. Step 4: Simplify right side
    31,342.80x = 872,295,707.68
  5. Step 5: Solve for x
    x = 872,295,707.68/31,342.80
  6. Step 6: Final answer
    x = 27,830.82

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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.