Home / 18,138.72-27,207.07-5,488.28

Finding the Fourth Proportional to 18,138.72, 27,207.07 and 5,488.28

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Solution

The fourth proportional to 18,138.72, 27,207.07 and 5,488.28 is: 8,232.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,138.72 : 27,207.07 = 5,488.28 : x
  2. Step 2: Convert to fraction form
    18,138.72/27,207.07 = 5,488.28/x
  3. Step 3: Cross multiply
    18,138.72x = 27,207.07 × 5,488.28
  4. Step 4: Simplify right side
    18,138.72x = 149,320,018.14
  5. Step 5: Solve for x
    x = 149,320,018.14/18,138.72
  6. Step 6: Final answer
    x = 8,232.11

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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.