Home / 21,581.25-32,379.66-7,543.35

Finding the Fourth Proportional to 21,581.25, 32,379.66 and 7,543.35

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Solution

The fourth proportional to 21,581.25, 32,379.66 and 7,543.35 is: 11,317.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,581.25 : 32,379.66 = 7,543.35 : x
  2. Step 2: Convert to fraction form
    21,581.25/32,379.66 = 7,543.35/x
  3. Step 3: Cross multiply
    21,581.25x = 32,379.66 × 7,543.35
  4. Step 4: Simplify right side
    21,581.25x = 244,251,108.26
  5. Step 5: Solve for x
    x = 244,251,108.26/21,581.25
  6. Step 6: Final answer
    x = 11,317.75

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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.