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Finding the Fourth Proportional to 18,273.12, 27,393.48 and 8,907.90

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Solution

The fourth proportional to 18,273.12, 27,393.48 and 8,907.90 is: 13,353.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,273.12 : 27,393.48 = 8,907.90 : x
  2. Step 2: Convert to fraction form
    18,273.12/27,393.48 = 8,907.90/x
  3. Step 3: Cross multiply
    18,273.12x = 27,393.48 × 8,907.90
  4. Step 4: Simplify right side
    18,273.12x = 244,018,380.49
  5. Step 5: Solve for x
    x = 244,018,380.49/18,273.12
  6. Step 6: Final answer
    x = 13,353.95

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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.