Home / 20,928.48-28,891.23-11,974.23

Finding the Fourth Proportional to 20,928.48, 28,891.23 and 11,974.23

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Solution

The fourth proportional to 20,928.48, 28,891.23 and 11,974.23 is: 16,530.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,928.48 : 28,891.23 = 11,974.23 : x
  2. Step 2: Convert to fraction form
    20,928.48/28,891.23 = 11,974.23/x
  3. Step 3: Cross multiply
    20,928.48x = 28,891.23 × 11,974.23
  4. Step 4: Simplify right side
    20,928.48x = 345,950,233.00
  5. Step 5: Solve for x
    x = 345,950,233.00/20,928.48
  6. Step 6: Final answer
    x = 16,530.12

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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.