Home / 11,226.60-16,839.90-7,770.60

Finding the Fourth Proportional to 11,226.60, 16,839.90 and 7,770.60

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Solution

The fourth proportional to 11,226.60, 16,839.90 and 7,770.60 is: 11,655.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,226.60 : 16,839.90 = 7,770.60 : x
  2. Step 2: Convert to fraction form
    11,226.60/16,839.90 = 7,770.60/x
  3. Step 3: Cross multiply
    11,226.60x = 16,839.90 × 7,770.60
  4. Step 4: Simplify right side
    11,226.60x = 130,856,126.94
  5. Step 5: Solve for x
    x = 130,856,126.94/11,226.60
  6. Step 6: Final answer
    x = 11,655.90

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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.