Home / 18,109.72-27,174.86-9,789.54

Finding the Fourth Proportional to 18,109.72, 27,174.86 and 9,789.54

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Solution

The fourth proportional to 18,109.72, 27,174.86 and 9,789.54 is: 14,689.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,109.72 : 27,174.86 = 9,789.54 : x
  2. Step 2: Convert to fraction form
    18,109.72/27,174.86 = 9,789.54/x
  3. Step 3: Cross multiply
    18,109.72x = 27,174.86 × 9,789.54
  4. Step 4: Simplify right side
    18,109.72x = 266,029,264.82
  5. Step 5: Solve for x
    x = 266,029,264.82/18,109.72
  6. Step 6: Final answer
    x = 14,689.86

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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.