Home / 31,512.15-43,473.10-18,758.18

Finding the Fourth Proportional to 31,512.15, 43,473.10 and 18,758.18

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Solution

The fourth proportional to 31,512.15, 43,473.10 and 18,758.18 is: 25,878.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,512.15 : 43,473.10 = 18,758.18 : x
  2. Step 2: Convert to fraction form
    31,512.15/43,473.10 = 18,758.18/x
  3. Step 3: Cross multiply
    31,512.15x = 43,473.10 × 18,758.18
  4. Step 4: Simplify right side
    31,512.15x = 815,476,234.96
  5. Step 5: Solve for x
    x = 815,476,234.96/31,512.15
  6. Step 6: Final answer
    x = 25,878.15

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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.