Home / 11,991.40-16,548.23-6,686.57

Finding the Fourth Proportional to 11,991.40, 16,548.23 and 6,686.57

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Solution

The fourth proportional to 11,991.40, 16,548.23 and 6,686.57 is: 9,227.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,991.40 : 16,548.23 = 6,686.57 : x
  2. Step 2: Convert to fraction form
    11,991.40/16,548.23 = 6,686.57/x
  3. Step 3: Cross multiply
    11,991.40x = 16,548.23 × 6,686.57
  4. Step 4: Simplify right side
    11,991.40x = 110,650,906.21
  5. Step 5: Solve for x
    x = 110,650,906.21/11,991.40
  6. Step 6: Final answer
    x = 9,227.52

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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.