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Finding the Fourth Proportional to 18,220.80, 27,266.40 and 16,665.60

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Solution

The fourth proportional to 18,220.80, 27,266.40 and 16,665.60 is: 24,939.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,220.80 : 27,266.40 = 16,665.60 : x
  2. Step 2: Convert to fraction form
    18,220.80/27,266.40 = 16,665.60/x
  3. Step 3: Cross multiply
    18,220.80x = 27,266.40 × 16,665.60
  4. Step 4: Simplify right side
    18,220.80x = 454,410,915.84
  5. Step 5: Solve for x
    x = 454,410,915.84/18,220.80
  6. Step 6: Final answer
    x = 24,939.13

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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.