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Finding the Fourth Proportional to 9,338.82, 13,989.08 and 7,479.87

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Solution

The fourth proportional to 9,338.82, 13,989.08 and 7,479.87 is: 11,204.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,338.82 : 13,989.08 = 7,479.87 : x
  2. Step 2: Convert to fraction form
    9,338.82/13,989.08 = 7,479.87/x
  3. Step 3: Cross multiply
    9,338.82x = 13,989.08 × 7,479.87
  4. Step 4: Simplify right side
    9,338.82x = 104,636,499.82
  5. Step 5: Solve for x
    x = 104,636,499.82/9,338.82
  6. Step 6: Final answer
    x = 11,204.47

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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.