Home / 28,619.92-42,929.40-7,843.42

Finding the Fourth Proportional to 28,619.92, 42,929.40 and 7,843.42

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Solution

The fourth proportional to 28,619.92, 42,929.40 and 7,843.42 is: 11,764.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,619.92 : 42,929.40 = 7,843.42 : x
  2. Step 2: Convert to fraction form
    28,619.92/42,929.40 = 7,843.42/x
  3. Step 3: Cross multiply
    28,619.92x = 42,929.40 × 7,843.42
  4. Step 4: Simplify right side
    28,619.92x = 336,713,099.90
  5. Step 5: Solve for x
    x = 336,713,099.90/28,619.92
  6. Step 6: Final answer
    x = 11,764.99

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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.