Home / 43,721.28-65,581.97-18,745.20

Finding the Fourth Proportional to 43,721.28, 65,581.97 and 18,745.20

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Solution

The fourth proportional to 43,721.28, 65,581.97 and 18,745.20 is: 28,117.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,721.28 : 65,581.97 = 18,745.20 : x
  2. Step 2: Convert to fraction form
    43,721.28/65,581.97 = 18,745.20/x
  3. Step 3: Cross multiply
    43,721.28x = 65,581.97 × 18,745.20
  4. Step 4: Simplify right side
    43,721.28x = 1,229,347,050.32
  5. Step 5: Solve for x
    x = 1,229,347,050.32/43,721.28
  6. Step 6: Final answer
    x = 28,117.82

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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.