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Finding the Fourth Proportional to 11,985.11, 16,540.02 and 6,679.97

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Solution

The fourth proportional to 11,985.11, 16,540.02 and 6,679.97 is: 9,218.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,985.11 : 16,540.02 = 6,679.97 : x
  2. Step 2: Convert to fraction form
    11,985.11/16,540.02 = 6,679.97/x
  3. Step 3: Cross multiply
    11,985.11x = 16,540.02 × 6,679.97
  4. Step 4: Simplify right side
    11,985.11x = 110,486,835.51
  5. Step 5: Solve for x
    x = 110,486,835.51/11,985.11
  6. Step 6: Final answer
    x = 9,218.67

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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.