Home / 20,127.96-27,774.55-11,174.49

Finding the Fourth Proportional to 20,127.96, 27,774.55 and 11,174.49

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Solution

The fourth proportional to 20,127.96, 27,774.55 and 11,174.49 is: 15,419.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,127.96 : 27,774.55 = 11,174.49 : x
  2. Step 2: Convert to fraction form
    20,127.96/27,774.55 = 11,174.49/x
  3. Step 3: Cross multiply
    20,127.96x = 27,774.55 × 11,174.49
  4. Step 4: Simplify right side
    20,127.96x = 310,366,431.23
  5. Step 5: Solve for x
    x = 310,366,431.23/20,127.96
  6. Step 6: Final answer
    x = 15,419.67

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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.