Home / 36,678.78-55,021.23-11,722.38

Finding the Fourth Proportional to 36,678.78, 55,021.23 and 11,722.38

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Solution

The fourth proportional to 36,678.78, 55,021.23 and 11,722.38 is: 17,584.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,678.78 : 55,021.23 = 11,722.38 : x
  2. Step 2: Convert to fraction form
    36,678.78/55,021.23 = 11,722.38/x
  3. Step 3: Cross multiply
    36,678.78x = 55,021.23 × 11,722.38
  4. Step 4: Simplify right side
    36,678.78x = 644,979,766.13
  5. Step 5: Solve for x
    x = 644,979,766.13/36,678.78
  6. Step 6: Final answer
    x = 17,584.55

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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.