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Finding the Fourth Proportional to 18,589.30, 27,905.55 and 11,202.10

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Solution

The fourth proportional to 18,589.30, 27,905.55 and 11,202.10 is: 16,816.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,589.30 : 27,905.55 = 11,202.10 : x
  2. Step 2: Convert to fraction form
    18,589.30/27,905.55 = 11,202.10/x
  3. Step 3: Cross multiply
    18,589.30x = 27,905.55 × 11,202.10
  4. Step 4: Simplify right side
    18,589.30x = 312,600,761.66
  5. Step 5: Solve for x
    x = 312,600,761.66/18,589.30
  6. Step 6: Final answer
    x = 16,816.17

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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.