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Finding the Fourth Proportional to 12,606.20, 18,860.70 and 8,232.20

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Solution

The fourth proportional to 12,606.20, 18,860.70 and 8,232.20 is: 12,316.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,606.20 : 18,860.70 = 8,232.20 : x
  2. Step 2: Convert to fraction form
    12,606.20/18,860.70 = 8,232.20/x
  3. Step 3: Cross multiply
    12,606.20x = 18,860.70 × 8,232.20
  4. Step 4: Simplify right side
    12,606.20x = 155,265,054.54
  5. Step 5: Solve for x
    x = 155,265,054.54/12,606.20
  6. Step 6: Final answer
    x = 12,316.56

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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.