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Finding the Fourth Proportional to 12,213.60, 18,334.80 and 6,952.80

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Solution

The fourth proportional to 12,213.60, 18,334.80 and 6,952.80 is: 10,437.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,213.60 : 18,334.80 = 6,952.80 : x
  2. Step 2: Convert to fraction form
    12,213.60/18,334.80 = 6,952.80/x
  3. Step 3: Cross multiply
    12,213.60x = 18,334.80 × 6,952.80
  4. Step 4: Simplify right side
    12,213.60x = 127,478,197.44
  5. Step 5: Solve for x
    x = 127,478,197.44/12,213.60
  6. Step 6: Final answer
    x = 10,437.40

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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.