Home / 43,536.40-65,304.32-21,020.80

Finding the Fourth Proportional to 43,536.40, 65,304.32 and 21,020.80

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Solution

The fourth proportional to 43,536.40, 65,304.32 and 21,020.80 is: 31,531.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,536.40 : 65,304.32 = 21,020.80 : x
  2. Step 2: Convert to fraction form
    43,536.40/65,304.32 = 21,020.80/x
  3. Step 3: Cross multiply
    43,536.40x = 65,304.32 × 21,020.80
  4. Step 4: Simplify right side
    43,536.40x = 1,372,749,049.86
  5. Step 5: Solve for x
    x = 1,372,749,049.86/43,536.40
  6. Step 6: Final answer
    x = 31,531.06

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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.