Home / 18,628.07-27,942.34-5,480.72

Finding the Fourth Proportional to 18,628.07, 27,942.34 and 5,480.72

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Solution

The fourth proportional to 18,628.07, 27,942.34 and 5,480.72 is: 8,221.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,628.07 : 27,942.34 = 5,480.72 : x
  2. Step 2: Convert to fraction form
    18,628.07/27,942.34 = 5,480.72/x
  3. Step 3: Cross multiply
    18,628.07x = 27,942.34 × 5,480.72
  4. Step 4: Simplify right side
    18,628.07x = 153,143,988.27
  5. Step 5: Solve for x
    x = 153,143,988.27/18,628.07
  6. Step 6: Final answer
    x = 8,221.14

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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.