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Finding the Fourth Proportional to 13,479.87, 18,601.97 and 7,511.41

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Solution

The fourth proportional to 13,479.87, 18,601.97 and 7,511.41 is: 10,365.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,479.87 : 18,601.97 = 7,511.41 : x
  2. Step 2: Convert to fraction form
    13,479.87/18,601.97 = 7,511.41/x
  3. Step 3: Cross multiply
    13,479.87x = 18,601.97 × 7,511.41
  4. Step 4: Simplify right side
    13,479.87x = 139,726,892.91
  5. Step 5: Solve for x
    x = 139,726,892.91/13,479.87
  6. Step 6: Final answer
    x = 10,365.60

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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.