Home / 19,879.11-27,434.73-11,383.90

Finding the Fourth Proportional to 19,879.11, 27,434.73 and 11,383.90

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Solution

The fourth proportional to 19,879.11, 27,434.73 and 11,383.90 is: 15,710.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,879.11 : 27,434.73 = 11,383.90 : x
  2. Step 2: Convert to fraction form
    19,879.11/27,434.73 = 11,383.90/x
  3. Step 3: Cross multiply
    19,879.11x = 27,434.73 × 11,383.90
  4. Step 4: Simplify right side
    19,879.11x = 312,314,222.85
  5. Step 5: Solve for x
    x = 312,314,222.85/19,879.11
  6. Step 6: Final answer
    x = 15,710.67

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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.