Home / 31,286.96-43,177.56-19,356.50

Finding the Fourth Proportional to 31,286.96, 43,177.56 and 19,356.50

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Solution

The fourth proportional to 31,286.96, 43,177.56 and 19,356.50 is: 26,712.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,286.96 : 43,177.56 = 19,356.50 : x
  2. Step 2: Convert to fraction form
    31,286.96/43,177.56 = 19,356.50/x
  3. Step 3: Cross multiply
    31,286.96x = 43,177.56 × 19,356.50
  4. Step 4: Simplify right side
    31,286.96x = 835,766,440.14
  5. Step 5: Solve for x
    x = 835,766,440.14/31,286.96
  6. Step 6: Final answer
    x = 26,712.93

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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.