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Finding the Fourth Proportional to 18,043.60, 27,000.60 and 12,211.60

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Solution

The fourth proportional to 18,043.60, 27,000.60 and 12,211.60 is: 18,273.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,043.60 : 27,000.60 = 12,211.60 : x
  2. Step 2: Convert to fraction form
    18,043.60/27,000.60 = 12,211.60/x
  3. Step 3: Cross multiply
    18,043.60x = 27,000.60 × 12,211.60
  4. Step 4: Simplify right side
    18,043.60x = 329,720,526.96
  5. Step 5: Solve for x
    x = 329,720,526.96/18,043.60
  6. Step 6: Final answer
    x = 18,273.54

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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.