Home / 20,620.68-28,456.36-11,668.10

Finding the Fourth Proportional to 20,620.68, 28,456.36 and 11,668.10

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Solution

The fourth proportional to 20,620.68, 28,456.36 and 11,668.10 is: 16,101.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,620.68 : 28,456.36 = 11,668.10 : x
  2. Step 2: Convert to fraction form
    20,620.68/28,456.36 = 11,668.10/x
  3. Step 3: Cross multiply
    20,620.68x = 28,456.36 × 11,668.10
  4. Step 4: Simplify right side
    20,620.68x = 332,031,708.36
  5. Step 5: Solve for x
    x = 332,031,708.36/20,620.68
  6. Step 6: Final answer
    x = 16,101.88

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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.