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Finding the Fourth Proportional to 18,009.10, 27,017.70 and 5,529.70

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Solution

The fourth proportional to 18,009.10, 27,017.70 and 5,529.70 is: 8,295.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,009.10 : 27,017.70 = 5,529.70 : x
  2. Step 2: Convert to fraction form
    18,009.10/27,017.70 = 5,529.70/x
  3. Step 3: Cross multiply
    18,009.10x = 27,017.70 × 5,529.70
  4. Step 4: Simplify right side
    18,009.10x = 149,399,775.69
  5. Step 5: Solve for x
    x = 149,399,775.69/18,009.10
  6. Step 6: Final answer
    x = 8,295.79

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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.