Home / 21,581.20-32,379.57-7,543.29

Finding the Fourth Proportional to 21,581.20, 32,379.57 and 7,543.29

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Solution

The fourth proportional to 21,581.20, 32,379.57 and 7,543.29 is: 11,317.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,581.20 : 32,379.57 = 7,543.29 : x
  2. Step 2: Convert to fraction form
    21,581.20/32,379.57 = 7,543.29/x
  3. Step 3: Cross multiply
    21,581.20x = 32,379.57 × 7,543.29
  4. Step 4: Simplify right side
    21,581.20x = 244,248,486.59
  5. Step 5: Solve for x
    x = 244,248,486.59/21,581.20
  6. Step 6: Final answer
    x = 11,317.65

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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.