Home / 19,876.97-29,815.14-5,085.76

Finding the Fourth Proportional to 19,876.97, 29,815.14 and 5,085.76

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Solution

The fourth proportional to 19,876.97, 29,815.14 and 5,085.76 is: 7,628.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,876.97 : 29,815.14 = 5,085.76 : x
  2. Step 2: Convert to fraction form
    19,876.97/29,815.14 = 5,085.76/x
  3. Step 3: Cross multiply
    19,876.97x = 29,815.14 × 5,085.76
  4. Step 4: Simplify right side
    19,876.97x = 151,632,646.41
  5. Step 5: Solve for x
    x = 151,632,646.41/19,876.97
  6. Step 6: Final answer
    x = 7,628.56

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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.