Home / 28,719.66-39,632.78-16,144.41

Finding the Fourth Proportional to 28,719.66, 39,632.78 and 16,144.41

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Solution

The fourth proportional to 28,719.66, 39,632.78 and 16,144.41 is: 22,279.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,719.66 : 39,632.78 = 16,144.41 : x
  2. Step 2: Convert to fraction form
    28,719.66/39,632.78 = 16,144.41/x
  3. Step 3: Cross multiply
    28,719.66x = 39,632.78 × 16,144.41
  4. Step 4: Simplify right side
    28,719.66x = 639,847,769.04
  5. Step 5: Solve for x
    x = 639,847,769.04/28,719.66
  6. Step 6: Final answer
    x = 22,279.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.