Home / 21,943.10-32,911.21-7,151.90

Finding the Fourth Proportional to 21,943.10, 32,911.21 and 7,151.90

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Solution

The fourth proportional to 21,943.10, 32,911.21 and 7,151.90 is: 10,726.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,943.10 : 32,911.21 = 7,151.90 : x
  2. Step 2: Convert to fraction form
    21,943.10/32,911.21 = 7,151.90/x
  3. Step 3: Cross multiply
    21,943.10x = 32,911.21 × 7,151.90
  4. Step 4: Simplify right side
    21,943.10x = 235,377,527.18
  5. Step 5: Solve for x
    x = 235,377,527.18/21,943.10
  6. Step 6: Final answer
    x = 10,726.72

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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.