Home / 31,640.22-43,656.25-18,890.92

Finding the Fourth Proportional to 31,640.22, 43,656.25 and 18,890.92

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Solution

The fourth proportional to 31,640.22, 43,656.25 and 18,890.92 is: 26,065.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,640.22 : 43,656.25 = 18,890.92 : x
  2. Step 2: Convert to fraction form
    31,640.22/43,656.25 = 18,890.92/x
  3. Step 3: Cross multiply
    31,640.22x = 43,656.25 × 18,890.92
  4. Step 4: Simplify right side
    31,640.22x = 824,706,726.25
  5. Step 5: Solve for x
    x = 824,706,726.25/31,640.22
  6. Step 6: Final answer
    x = 26,065.14

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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.