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Finding the Fourth Proportional to 43,441.92, 65,162.21 and 13,859.57

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Solution

The fourth proportional to 43,441.92, 65,162.21 and 13,859.57 is: 20,789.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,441.92 : 65,162.21 = 13,859.57 : x
  2. Step 2: Convert to fraction form
    43,441.92/65,162.21 = 13,859.57/x
  3. Step 3: Cross multiply
    43,441.92x = 65,162.21 × 13,859.57
  4. Step 4: Simplify right side
    43,441.92x = 903,120,304.46
  5. Step 5: Solve for x
    x = 903,120,304.46/43,441.92
  6. Step 6: Final answer
    x = 20,789.14

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1.5x scale

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.