Home / 20,177.34-27,845.91-12,221.58

Finding the Fourth Proportional to 20,177.34, 27,845.91 and 12,221.58

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Solution

The fourth proportional to 20,177.34, 27,845.91 and 12,221.58 is: 16,866.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,177.34 : 27,845.91 = 12,221.58 : x
  2. Step 2: Convert to fraction form
    20,177.34/27,845.91 = 12,221.58/x
  3. Step 3: Cross multiply
    20,177.34x = 27,845.91 × 12,221.58
  4. Step 4: Simplify right side
    20,177.34x = 340,321,016.74
  5. Step 5: Solve for x
    x = 340,321,016.74/20,177.34
  6. Step 6: Final answer
    x = 16,866.50

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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.