Home / 31,720.39-43,772.25-17,377.35

Finding the Fourth Proportional to 31,720.39, 43,772.25 and 17,377.35

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Solution

The fourth proportional to 31,720.39, 43,772.25 and 17,377.35 is: 23,979.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,720.39 : 43,772.25 = 17,377.35 : x
  2. Step 2: Convert to fraction form
    31,720.39/43,772.25 = 17,377.35/x
  3. Step 3: Cross multiply
    31,720.39x = 43,772.25 × 17,377.35
  4. Step 4: Simplify right side
    31,720.39x = 760,645,708.54
  5. Step 5: Solve for x
    x = 760,645,708.54/31,720.39
  6. Step 6: Final answer
    x = 23,979.71

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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.