Home / 20,135.27-27,786.15-11,182.47

Finding the Fourth Proportional to 20,135.27, 27,786.15 and 11,182.47

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Solution

The fourth proportional to 20,135.27, 27,786.15 and 11,182.47 is: 15,431.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,135.27 : 27,786.15 = 11,182.47 : x
  2. Step 2: Convert to fraction form
    20,135.27/27,786.15 = 11,182.47/x
  3. Step 3: Cross multiply
    20,135.27x = 27,786.15 × 11,182.47
  4. Step 4: Simplify right side
    20,135.27x = 310,717,788.79
  5. Step 5: Solve for x
    x = 310,717,788.79/20,135.27
  6. Step 6: Final answer
    x = 15,431.52

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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.