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Finding the Fourth Proportional to 11,991.95, 17,987.81 and 6,726.95

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Solution

The fourth proportional to 11,991.95, 17,987.81 and 6,726.95 is: 10,090.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,991.95 : 17,987.81 = 6,726.95 : x
  2. Step 2: Convert to fraction form
    11,991.95/17,987.81 = 6,726.95/x
  3. Step 3: Cross multiply
    11,991.95x = 17,987.81 × 6,726.95
  4. Step 4: Simplify right side
    11,991.95x = 121,002,974.91
  5. Step 5: Solve for x
    x = 121,002,974.91/11,991.95
  6. Step 6: Final answer
    x = 10,090.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.