Home / 11,991.83-16,548.10-6,685.61

Finding the Fourth Proportional to 11,991.83, 16,548.10 and 6,685.61

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Solution

The fourth proportional to 11,991.83, 16,548.10 and 6,685.61 is: 9,225.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,991.83 : 16,548.10 = 6,685.61 : x
  2. Step 2: Convert to fraction form
    11,991.83/16,548.10 = 6,685.61/x
  3. Step 3: Cross multiply
    11,991.83x = 16,548.10 × 6,685.61
  4. Step 4: Simplify right side
    11,991.83x = 110,634,043.39
  5. Step 5: Solve for x
    x = 110,634,043.39/11,991.83
  6. Step 6: Final answer
    x = 9,225.79

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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.