Home / 31,684.06-43,721.01-18,934.71

Finding the Fourth Proportional to 31,684.06, 43,721.01 and 18,934.71

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Solution

The fourth proportional to 31,684.06, 43,721.01 and 18,934.71 is: 26,128.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,684.06 : 43,721.01 = 18,934.71 : x
  2. Step 2: Convert to fraction form
    31,684.06/43,721.01 = 18,934.71/x
  3. Step 3: Cross multiply
    31,684.06x = 43,721.01 × 18,934.71
  4. Step 4: Simplify right side
    31,684.06x = 827,844,645.26
  5. Step 5: Solve for x
    x = 827,844,645.26/31,684.06
  6. Step 6: Final answer
    x = 26,128.11

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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.