Home / 20,736.72-28,632.36-13,673.04

Finding the Fourth Proportional to 20,736.72, 28,632.36 and 13,673.04

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Solution

The fourth proportional to 20,736.72, 28,632.36 and 13,673.04 is: 18,879.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,736.72 : 28,632.36 = 13,673.04 : x
  2. Step 2: Convert to fraction form
    20,736.72/28,632.36 = 13,673.04/x
  3. Step 3: Cross multiply
    20,736.72x = 28,632.36 × 13,673.04
  4. Step 4: Simplify right side
    20,736.72x = 391,491,403.57
  5. Step 5: Solve for x
    x = 391,491,403.57/20,736.72
  6. Step 6: Final answer
    x = 18,879.14

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1.5x scale

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.