Home / 19,716.40-27,208.28-11,218.34

Finding the Fourth Proportional to 19,716.40, 27,208.28 and 11,218.34

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Solution

The fourth proportional to 19,716.40, 27,208.28 and 11,218.34 is: 15,481.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,716.40 : 27,208.28 = 11,218.34 : x
  2. Step 2: Convert to fraction form
    19,716.40/27,208.28 = 11,218.34/x
  3. Step 3: Cross multiply
    19,716.40x = 27,208.28 × 11,218.34
  4. Step 4: Simplify right side
    19,716.40x = 305,231,735.86
  5. Step 5: Solve for x
    x = 305,231,735.86/19,716.40
  6. Step 6: Final answer
    x = 15,481.11

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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.