Home / 20,057.76-27,679.98-11,105.25

Finding the Fourth Proportional to 20,057.76, 27,679.98 and 11,105.25

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Solution

The fourth proportional to 20,057.76, 27,679.98 and 11,105.25 is: 15,325.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,057.76 : 27,679.98 = 11,105.25 : x
  2. Step 2: Convert to fraction form
    20,057.76/27,679.98 = 11,105.25/x
  3. Step 3: Cross multiply
    20,057.76x = 27,679.98 × 11,105.25
  4. Step 4: Simplify right side
    20,057.76x = 307,393,097.90
  5. Step 5: Solve for x
    x = 307,393,097.90/20,057.76
  6. Step 6: Final answer
    x = 15,325.40

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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.