Home / 20,171.34-27,837.80-11,220.44

Finding the Fourth Proportional to 20,171.34, 27,837.80 and 11,220.44

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Solution

The fourth proportional to 20,171.34, 27,837.80 and 11,220.44 is: 15,484.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,171.34 : 27,837.80 = 11,220.44 : x
  2. Step 2: Convert to fraction form
    20,171.34/27,837.80 = 11,220.44/x
  3. Step 3: Cross multiply
    20,171.34x = 27,837.80 × 11,220.44
  4. Step 4: Simplify right side
    20,171.34x = 312,352,169.34
  5. Step 5: Solve for x
    x = 312,352,169.34/20,171.34
  6. Step 6: Final answer
    x = 15,484.95

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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.