Home / 31,513.15-43,474.48-18,759.18

Finding the Fourth Proportional to 31,513.15, 43,474.48 and 18,759.18

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Solution

The fourth proportional to 31,513.15, 43,474.48 and 18,759.18 is: 25,879.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,513.15 : 43,474.48 = 18,759.18 : x
  2. Step 2: Convert to fraction form
    31,513.15/43,474.48 = 18,759.18/x
  3. Step 3: Cross multiply
    31,513.15x = 43,474.48 × 18,759.18
  4. Step 4: Simplify right side
    31,513.15x = 815,545,595.73
  5. Step 5: Solve for x
    x = 815,545,595.73/31,513.15
  6. Step 6: Final answer
    x = 25,879.53

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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.