Home / 21,719.80-32,581.50-6,930.82

Finding the Fourth Proportional to 21,719.80, 32,581.50 and 6,930.82

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Solution

The fourth proportional to 21,719.80, 32,581.50 and 6,930.82 is: 10,396.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,719.80 : 32,581.50 = 6,930.82 : x
  2. Step 2: Convert to fraction form
    21,719.80/32,581.50 = 6,930.82/x
  3. Step 3: Cross multiply
    21,719.80x = 32,581.50 × 6,930.82
  4. Step 4: Simplify right side
    21,719.80x = 225,816,511.83
  5. Step 5: Solve for x
    x = 225,816,511.83/21,719.80
  6. Step 6: Final answer
    x = 10,396.80

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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.