Home / 28,786-43,160.56-19,876.38

Finding the Fourth Proportional to 28,786, 43,160.56 and 19,876.38

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Solution

The fourth proportional to 28,786, 43,160.56 and 19,876.38 is: 29,801.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,786 : 43,160.56 = 19,876.38 : x
  2. Step 2: Convert to fraction form
    28,786/43,160.56 = 19,876.38/x
  3. Step 3: Cross multiply
    28,786x = 43,160.56 × 19,876.38
  4. Step 4: Simplify right side
    28,786x = 857,875,691.57
  5. Step 5: Solve for x
    x = 857,875,691.57/28,786
  6. Step 6: Final answer
    x = 29,801.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.