Home / 19,660.07-27,131.67-11,278.19

Finding the Fourth Proportional to 19,660.07, 27,131.67 and 11,278.19

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Solution

The fourth proportional to 19,660.07, 27,131.67 and 11,278.19 is: 15,564.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,660.07 : 27,131.67 = 11,278.19 : x
  2. Step 2: Convert to fraction form
    19,660.07/27,131.67 = 11,278.19/x
  3. Step 3: Cross multiply
    19,660.07x = 27,131.67 × 11,278.19
  4. Step 4: Simplify right side
    19,660.07x = 305,995,993.62
  5. Step 5: Solve for x
    x = 305,995,993.62/19,660.07
  6. Step 6: Final answer
    x = 15,564.34

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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.