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Finding the Fourth Proportional to 9,339.82, 13,990.58 and 7,480.87

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Solution

The fourth proportional to 9,339.82, 13,990.58 and 7,480.87 is: 11,205.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,339.82 : 13,990.58 = 7,480.87 : x
  2. Step 2: Convert to fraction form
    9,339.82/13,990.58 = 7,480.87/x
  3. Step 3: Cross multiply
    9,339.82x = 13,990.58 × 7,480.87
  4. Step 4: Simplify right side
    9,339.82x = 104,661,710.20
  5. Step 5: Solve for x
    x = 104,661,710.20/9,339.82
  6. Step 6: Final answer
    x = 11,205.97

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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.