Home / 20,662.28-28,514.12-11,230.84

Finding the Fourth Proportional to 20,662.28, 28,514.12 and 11,230.84

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Solution

The fourth proportional to 20,662.28, 28,514.12 and 11,230.84 is: 15,498.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,662.28 : 28,514.12 = 11,230.84 : x
  2. Step 2: Convert to fraction form
    20,662.28/28,514.12 = 11,230.84/x
  3. Step 3: Cross multiply
    20,662.28x = 28,514.12 × 11,230.84
  4. Step 4: Simplify right side
    20,662.28x = 320,237,519.46
  5. Step 5: Solve for x
    x = 320,237,519.46/20,662.28
  6. Step 6: Final answer
    x = 15,498.65

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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.