Home / 28,212.57-38,945.76-19,747.94

Finding the Fourth Proportional to 28,212.57, 38,945.76 and 19,747.94

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Solution

The fourth proportional to 28,212.57, 38,945.76 and 19,747.94 is: 27,260.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,212.57 : 38,945.76 = 19,747.94 : x
  2. Step 2: Convert to fraction form
    28,212.57/38,945.76 = 19,747.94/x
  3. Step 3: Cross multiply
    28,212.57x = 38,945.76 × 19,747.94
  4. Step 4: Simplify right side
    28,212.57x = 769,098,531.73
  5. Step 5: Solve for x
    x = 769,098,531.73/28,212.57
  6. Step 6: Final answer
    x = 27,260.85

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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.