Home / 11,406.39-15,740.66-6,370.70

Finding the Fourth Proportional to 11,406.39, 15,740.66 and 6,370.70

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Solution

The fourth proportional to 11,406.39, 15,740.66 and 6,370.70 is: 8,791.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,406.39 : 15,740.66 = 6,370.70 : x
  2. Step 2: Convert to fraction form
    11,406.39/15,740.66 = 6,370.70/x
  3. Step 3: Cross multiply
    11,406.39x = 15,740.66 × 6,370.70
  4. Step 4: Simplify right side
    11,406.39x = 100,278,912.11
  5. Step 5: Solve for x
    x = 100,278,912.11/11,406.39
  6. Step 6: Final answer
    x = 8,791.47

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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.