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Finding the Fourth Proportional to 21,959.92, 32,940.42 and 6,377.68

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Solution

The fourth proportional to 21,959.92, 32,940.42 and 6,377.68 is: 9,566.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,959.92 : 32,940.42 = 6,377.68 : x
  2. Step 2: Convert to fraction form
    21,959.92/32,940.42 = 6,377.68/x
  3. Step 3: Cross multiply
    21,959.92x = 32,940.42 × 6,377.68
  4. Step 4: Simplify right side
    21,959.92x = 210,083,457.83
  5. Step 5: Solve for x
    x = 210,083,457.83/21,959.92
  6. Step 6: Final answer
    x = 9,566.68

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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.