Home / 20,108.38-27,749.58-11,726.50

Finding the Fourth Proportional to 20,108.38, 27,749.58 and 11,726.50

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Solution

The fourth proportional to 20,108.38, 27,749.58 and 11,726.50 is: 16,182.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,108.38 : 27,749.58 = 11,726.50 : x
  2. Step 2: Convert to fraction form
    20,108.38/27,749.58 = 11,726.50/x
  3. Step 3: Cross multiply
    20,108.38x = 27,749.58 × 11,726.50
  4. Step 4: Simplify right side
    20,108.38x = 325,405,311.12
  5. Step 5: Solve for x
    x = 325,405,311.12/20,108.38
  6. Step 6: Final answer
    x = 16,182.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.