Home / 31,380.12-43,310.70-19,448.76

Finding the Fourth Proportional to 31,380.12, 43,310.70 and 19,448.76

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Solution

The fourth proportional to 31,380.12, 43,310.70 and 19,448.76 is: 26,843.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,380.12 : 43,310.70 = 19,448.76 : x
  2. Step 2: Convert to fraction form
    31,380.12/43,310.70 = 19,448.76/x
  3. Step 3: Cross multiply
    31,380.12x = 43,310.70 × 19,448.76
  4. Step 4: Simplify right side
    31,380.12x = 842,339,409.73
  5. Step 5: Solve for x
    x = 842,339,409.73/31,380.12
  6. Step 6: Final answer
    x = 26,843.09

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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.