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Finding the Fourth Proportional to 18,011.43, 27,009.92 and 7,474.28

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Solution

The fourth proportional to 18,011.43, 27,009.92 and 7,474.28 is: 11,208.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,011.43 : 27,009.92 = 7,474.28 : x
  2. Step 2: Convert to fraction form
    18,011.43/27,009.92 = 7,474.28/x
  3. Step 3: Cross multiply
    18,011.43x = 27,009.92 × 7,474.28
  4. Step 4: Simplify right side
    18,011.43x = 201,879,588.49
  5. Step 5: Solve for x
    x = 201,879,588.49/18,011.43
  6. Step 6: Final answer
    x = 11,208.42

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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.