Home / 18,108.92-27,166.26-7,720.76

Finding the Fourth Proportional to 18,108.92, 27,166.26 and 7,720.76

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Solution

The fourth proportional to 18,108.92, 27,166.26 and 7,720.76 is: 11,582.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,108.92 : 27,166.26 = 7,720.76 : x
  2. Step 2: Convert to fraction form
    18,108.92/27,166.26 = 7,720.76/x
  3. Step 3: Cross multiply
    18,108.92x = 27,166.26 × 7,720.76
  4. Step 4: Simplify right side
    18,108.92x = 209,744,173.56
  5. Step 5: Solve for x
    x = 209,744,173.56/18,108.92
  6. Step 6: Final answer
    x = 11,582.37

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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.