Home / 20,448.49-28,218.19-11,373.80

Finding the Fourth Proportional to 20,448.49, 28,218.19 and 11,373.80

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Solution

The fourth proportional to 20,448.49, 28,218.19 and 11,373.80 is: 15,695.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,448.49 : 28,218.19 = 11,373.80 : x
  2. Step 2: Convert to fraction form
    20,448.49/28,218.19 = 11,373.80/x
  3. Step 3: Cross multiply
    20,448.49x = 28,218.19 × 11,373.80
  4. Step 4: Simplify right side
    20,448.49x = 320,948,049.42
  5. Step 5: Solve for x
    x = 320,948,049.42/20,448.49
  6. Step 6: Final answer
    x = 15,695.44

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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.