Home / 20,234.16-27,855.54-15,189.88

Finding the Fourth Proportional to 20,234.16, 27,855.54 and 15,189.88

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Solution

The fourth proportional to 20,234.16, 27,855.54 and 15,189.88 is: 20,911.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,234.16 : 27,855.54 = 15,189.88 : x
  2. Step 2: Convert to fraction form
    20,234.16/27,855.54 = 15,189.88/x
  3. Step 3: Cross multiply
    20,234.16x = 27,855.54 × 15,189.88
  4. Step 4: Simplify right side
    20,234.16x = 423,122,309.94
  5. Step 5: Solve for x
    x = 423,122,309.94/20,234.16
  6. Step 6: Final answer
    x = 20,911.29

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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.