Home / 20,154.40-27,809.96-11,201.88

Finding the Fourth Proportional to 20,154.40, 27,809.96 and 11,201.88

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Solution

The fourth proportional to 20,154.40, 27,809.96 and 11,201.88 is: 15,456.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,154.40 : 27,809.96 = 11,201.88 : x
  2. Step 2: Convert to fraction form
    20,154.40/27,809.96 = 11,201.88/x
  3. Step 3: Cross multiply
    20,154.40x = 27,809.96 × 11,201.88
  4. Step 4: Simplify right side
    20,154.40x = 311,523,834.72
  5. Step 5: Solve for x
    x = 311,523,834.72/20,154.40
  6. Step 6: Final answer
    x = 15,456.86

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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.