Home / 43,391.24-65,124.30-21,221

Finding the Fourth Proportional to 43,391.24, 65,124.30 and 21,221

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Solution

The fourth proportional to 43,391.24, 65,124.30 and 21,221 is: 31,849.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,391.24 : 65,124.30 = 21,221 : x
  2. Step 2: Convert to fraction form
    43,391.24/65,124.30 = 21,221/x
  3. Step 3: Cross multiply
    43,391.24x = 65,124.30 × 21,221
  4. Step 4: Simplify right side
    43,391.24x = 1,382,002,770.30
  5. Step 5: Solve for x
    x = 1,382,002,770.30/43,391.24
  6. Step 6: Final answer
    x = 31,849.81

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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.