Home / 43,824.80-65,780.40-21,663.20

Finding the Fourth Proportional to 43,824.80, 65,780.40 and 21,663.20

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Solution

The fourth proportional to 43,824.80, 65,780.40 and 21,663.20 is: 32,516.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,824.80 : 65,780.40 = 21,663.20 : x
  2. Step 2: Convert to fraction form
    43,824.80/65,780.40 = 21,663.20/x
  3. Step 3: Cross multiply
    43,824.80x = 65,780.40 × 21,663.20
  4. Step 4: Simplify right side
    43,824.80x = 1,425,013,961.28
  5. Step 5: Solve for x
    x = 1,425,013,961.28/43,824.80
  6. Step 6: Final answer
    x = 32,516.15

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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.