Home / 31,649.13-43,680.33-18,219.06

Finding the Fourth Proportional to 31,649.13, 43,680.33 and 18,219.06

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Solution

The fourth proportional to 31,649.13, 43,680.33 and 18,219.06 is: 25,144.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,649.13 : 43,680.33 = 18,219.06 : x
  2. Step 2: Convert to fraction form
    31,649.13/43,680.33 = 18,219.06/x
  3. Step 3: Cross multiply
    31,649.13x = 43,680.33 × 18,219.06
  4. Step 4: Simplify right side
    31,649.13x = 795,814,553.09
  5. Step 5: Solve for x
    x = 795,814,553.09/31,649.13
  6. Step 6: Final answer
    x = 25,144.91

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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.