Home / 19,969.28-27,557.70-11,016.78

Finding the Fourth Proportional to 19,969.28, 27,557.70 and 11,016.78

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Solution

The fourth proportional to 19,969.28, 27,557.70 and 11,016.78 is: 15,203.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,969.28 : 27,557.70 = 11,016.78 : x
  2. Step 2: Convert to fraction form
    19,969.28/27,557.70 = 11,016.78/x
  3. Step 3: Cross multiply
    19,969.28x = 27,557.70 × 11,016.78
  4. Step 4: Simplify right side
    19,969.28x = 303,597,025.22
  5. Step 5: Solve for x
    x = 303,597,025.22/19,969.28
  6. Step 6: Final answer
    x = 15,203.20

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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.