Home / 31,781.45-43,858.22-18,353.88

Finding the Fourth Proportional to 31,781.45, 43,858.22 and 18,353.88

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Solution

The fourth proportional to 31,781.45, 43,858.22 and 18,353.88 is: 25,328.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,781.45 : 43,858.22 = 18,353.88 : x
  2. Step 2: Convert to fraction form
    31,781.45/43,858.22 = 18,353.88/x
  3. Step 3: Cross multiply
    31,781.45x = 43,858.22 × 18,353.88
  4. Step 4: Simplify right side
    31,781.45x = 804,968,506.89
  5. Step 5: Solve for x
    x = 804,968,506.89/31,781.45
  6. Step 6: Final answer
    x = 25,328.25

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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.