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Finding the Fourth Proportional to 12,571.35, 18,860.13 and 8,880.81

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Solution

The fourth proportional to 12,571.35, 18,860.13 and 8,880.81 is: 13,323.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,571.35 : 18,860.13 = 8,880.81 : x
  2. Step 2: Convert to fraction form
    12,571.35/18,860.13 = 8,880.81/x
  3. Step 3: Cross multiply
    12,571.35x = 18,860.13 × 8,880.81
  4. Step 4: Simplify right side
    12,571.35x = 167,493,231.11
  5. Step 5: Solve for x
    x = 167,493,231.11/12,571.35
  6. Step 6: Final answer
    x = 13,323.41

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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.