Home / 21,721.10-32,581.04-6,930.90

Finding the Fourth Proportional to 21,721.10, 32,581.04 and 6,930.90

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Solution

The fourth proportional to 21,721.10, 32,581.04 and 6,930.90 is: 10,396.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,721.10 : 32,581.04 = 6,930.90 : x
  2. Step 2: Convert to fraction form
    21,721.10/32,581.04 = 6,930.90/x
  3. Step 3: Cross multiply
    21,721.10x = 32,581.04 × 6,930.90
  4. Step 4: Simplify right side
    21,721.10x = 225,815,895.48
  5. Step 5: Solve for x
    x = 225,815,895.48/21,721.10
  6. Step 6: Final answer
    x = 10,396.16

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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.