Home / 18,626.30-27,939.69-5,478.98

Finding the Fourth Proportional to 18,626.30, 27,939.69 and 5,478.98

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Solution

The fourth proportional to 18,626.30, 27,939.69 and 5,478.98 is: 8,218.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,626.30 : 27,939.69 = 5,478.98 : x
  2. Step 2: Convert to fraction form
    18,626.30/27,939.69 = 5,478.98/x
  3. Step 3: Cross multiply
    18,626.30x = 27,939.69 × 5,478.98
  4. Step 4: Simplify right side
    18,626.30x = 153,081,002.72
  5. Step 5: Solve for x
    x = 153,081,002.72/18,626.30
  6. Step 6: Final answer
    x = 8,218.54

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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.