Home / 20,115.34-27,760.91-11,164.59

Finding the Fourth Proportional to 20,115.34, 27,760.91 and 11,164.59

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Solution

The fourth proportional to 20,115.34, 27,760.91 and 11,164.59 is: 15,408.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,115.34 : 27,760.91 = 11,164.59 : x
  2. Step 2: Convert to fraction form
    20,115.34/27,760.91 = 11,164.59/x
  3. Step 3: Cross multiply
    20,115.34x = 27,760.91 × 11,164.59
  4. Step 4: Simplify right side
    20,115.34x = 309,939,122.35
  5. Step 5: Solve for x
    x = 309,939,122.35/20,115.34
  6. Step 6: Final answer
    x = 15,408.10

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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.