Home / 19,689.36-27,171.77-11,190.14

Finding the Fourth Proportional to 19,689.36, 27,171.77 and 11,190.14

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Solution

The fourth proportional to 19,689.36, 27,171.77 and 11,190.14 is: 15,442.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,689.36 : 27,171.77 = 11,190.14 : x
  2. Step 2: Convert to fraction form
    19,689.36/27,171.77 = 11,190.14/x
  3. Step 3: Cross multiply
    19,689.36x = 27,171.77 × 11,190.14
  4. Step 4: Simplify right side
    19,689.36x = 304,055,718.54
  5. Step 5: Solve for x
    x = 304,055,718.54/19,689.36
  6. Step 6: Final answer
    x = 15,442.64

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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.