Home / 31,177.97-42,994.86-19,238.78

Finding the Fourth Proportional to 31,177.97, 42,994.86 and 19,238.78

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Solution

The fourth proportional to 31,177.97, 42,994.86 and 19,238.78 is: 26,530.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,177.97 : 42,994.86 = 19,238.78 : x
  2. Step 2: Convert to fraction form
    31,177.97/42,994.86 = 19,238.78/x
  3. Step 3: Cross multiply
    31,177.97x = 42,994.86 × 19,238.78
  4. Step 4: Simplify right side
    31,177.97x = 827,168,437.70
  5. Step 5: Solve for x
    x = 827,168,437.70/31,177.97
  6. Step 6: Final answer
    x = 26,530.54

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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.