Home / 18,960.75-28,439.96-5,812.11

Finding the Fourth Proportional to 18,960.75, 28,439.96 and 5,812.11

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Solution

The fourth proportional to 18,960.75, 28,439.96 and 5,812.11 is: 8,717.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,960.75 : 28,439.96 = 5,812.11 : x
  2. Step 2: Convert to fraction form
    18,960.75/28,439.96 = 5,812.11/x
  3. Step 3: Cross multiply
    18,960.75x = 28,439.96 × 5,812.11
  4. Step 4: Simplify right side
    18,960.75x = 165,296,146.86
  5. Step 5: Solve for x
    x = 165,296,146.86/18,960.75
  6. Step 6: Final answer
    x = 8,717.81

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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.