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Finding the Fourth Proportional to 11,338.80, 15,647.04 and 6,370.80

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Solution

The fourth proportional to 11,338.80, 15,647.04 and 6,370.80 is: 8,791.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,338.80 : 15,647.04 = 6,370.80 : x
  2. Step 2: Convert to fraction form
    11,338.80/15,647.04 = 6,370.80/x
  3. Step 3: Cross multiply
    11,338.80x = 15,647.04 × 6,370.80
  4. Step 4: Simplify right side
    11,338.80x = 99,684,162.43
  5. Step 5: Solve for x
    x = 99,684,162.43/11,338.80
  6. Step 6: Final answer
    x = 8,791.42

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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.