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Finding the Fourth Proportional to 12,251.76, 18,359.91 and 8,448.53

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Solution

The fourth proportional to 12,251.76, 18,359.91 and 8,448.53 is: 12,660.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,251.76 : 18,359.91 = 8,448.53 : x
  2. Step 2: Convert to fraction form
    12,251.76/18,359.91 = 8,448.53/x
  3. Step 3: Cross multiply
    12,251.76x = 18,359.91 × 8,448.53
  4. Step 4: Simplify right side
    12,251.76x = 155,114,158.63
  5. Step 5: Solve for x
    x = 155,114,158.63/12,251.76
  6. Step 6: Final answer
    x = 12,660.56

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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.