Home / 19,876.42-29,815.68-5,085.44

Finding the Fourth Proportional to 19,876.42, 29,815.68 and 5,085.44

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Solution

The fourth proportional to 19,876.42, 29,815.68 and 5,085.44 is: 7,628.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,876.42 : 29,815.68 = 5,085.44 : x
  2. Step 2: Convert to fraction form
    19,876.42/29,815.68 = 5,085.44/x
  3. Step 3: Cross multiply
    19,876.42x = 29,815.68 × 5,085.44
  4. Step 4: Simplify right side
    19,876.42x = 151,625,851.70
  5. Step 5: Solve for x
    x = 151,625,851.70/19,876.42
  6. Step 6: Final answer
    x = 7,628.43

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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.