Home / 20,816.73-28,707.62-16,581.85

Finding the Fourth Proportional to 20,816.73, 28,707.62 and 16,581.85

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Solution

The fourth proportional to 20,816.73, 28,707.62 and 16,581.85 is: 22,867.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,816.73 : 28,707.62 = 16,581.85 : x
  2. Step 2: Convert to fraction form
    20,816.73/28,707.62 = 16,581.85/x
  3. Step 3: Cross multiply
    20,816.73x = 28,707.62 × 16,581.85
  4. Step 4: Simplify right side
    20,816.73x = 476,025,294.02
  5. Step 5: Solve for x
    x = 476,025,294.02/20,816.73
  6. Step 6: Final answer
    x = 22,867.44

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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.