Home / 20,142.76-27,797.86-11,190.22

Finding the Fourth Proportional to 20,142.76, 27,797.86 and 11,190.22

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Solution

The fourth proportional to 20,142.76, 27,797.86 and 11,190.22 is: 15,442.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,142.76 : 27,797.86 = 11,190.22 : x
  2. Step 2: Convert to fraction form
    20,142.76/27,797.86 = 11,190.22/x
  3. Step 3: Cross multiply
    20,142.76x = 27,797.86 × 11,190.22
  4. Step 4: Simplify right side
    20,142.76x = 311,064,168.93
  5. Step 5: Solve for x
    x = 311,064,168.93/20,142.76
  6. Step 6: Final answer
    x = 15,442.98

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Double scale
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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.