Home / 11,187.40-16,766.70-6,800.20

Finding the Fourth Proportional to 11,187.40, 16,766.70 and 6,800.20

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Solution

The fourth proportional to 11,187.40, 16,766.70 and 6,800.20 is: 10,191.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,187.40 : 16,766.70 = 6,800.20 : x
  2. Step 2: Convert to fraction form
    11,187.40/16,766.70 = 6,800.20/x
  3. Step 3: Cross multiply
    11,187.40x = 16,766.70 × 6,800.20
  4. Step 4: Simplify right side
    11,187.40x = 114,016,913.34
  5. Step 5: Solve for x
    x = 114,016,913.34/11,187.40
  6. Step 6: Final answer
    x = 10,191.55

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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.