Home / 11,178.39-16,770.18-3,280.59

Finding the Fourth Proportional to 11,178.39, 16,770.18 and 3,280.59

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Solution

The fourth proportional to 11,178.39, 16,770.18 and 3,280.59 is: 4,921.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,178.39 : 16,770.18 = 3,280.59 : x
  2. Step 2: Convert to fraction form
    11,178.39/16,770.18 = 3,280.59/x
  3. Step 3: Cross multiply
    11,178.39x = 16,770.18 × 3,280.59
  4. Step 4: Simplify right side
    11,178.39x = 55,016,084.81
  5. Step 5: Solve for x
    x = 55,016,084.81/11,178.39
  6. Step 6: Final answer
    x = 4,921.65

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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.