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Finding the Fourth Proportional to 12,213.16, 18,320.10 and 3,447.16

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Solution

The fourth proportional to 12,213.16, 18,320.10 and 3,447.16 is: 5,170.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,213.16 : 18,320.10 = 3,447.16 : x
  2. Step 2: Convert to fraction form
    12,213.16/18,320.10 = 3,447.16/x
  3. Step 3: Cross multiply
    12,213.16x = 18,320.10 × 3,447.16
  4. Step 4: Simplify right side
    12,213.16x = 63,152,315.92
  5. Step 5: Solve for x
    x = 63,152,315.92/12,213.16
  6. Step 6: Final answer
    x = 5,170.84

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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.