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Finding the Fourth Proportional to 11,479.62, 17,220.95 and 4,907.31

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Solution

The fourth proportional to 11,479.62, 17,220.95 and 4,907.31 is: 7,361.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,479.62 : 17,220.95 = 4,907.31 : x
  2. Step 2: Convert to fraction form
    11,479.62/17,220.95 = 4,907.31/x
  3. Step 3: Cross multiply
    11,479.62x = 17,220.95 × 4,907.31
  4. Step 4: Simplify right side
    11,479.62x = 84,508,515.61
  5. Step 5: Solve for x
    x = 84,508,515.61/11,479.62
  6. Step 6: Final answer
    x = 7,361.61

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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.