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Finding the Fourth Proportional to 18,163.20, 27,244.80 and 12,258.30

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Solution

The fourth proportional to 18,163.20, 27,244.80 and 12,258.30 is: 18,387.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,163.20 : 27,244.80 = 12,258.30 : x
  2. Step 2: Convert to fraction form
    18,163.20/27,244.80 = 12,258.30/x
  3. Step 3: Cross multiply
    18,163.20x = 27,244.80 × 12,258.30
  4. Step 4: Simplify right side
    18,163.20x = 333,974,931.84
  5. Step 5: Solve for x
    x = 333,974,931.84/18,163.20
  6. Step 6: Final answer
    x = 18,387.45

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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.