Home / 20,168.17-27,832.34-11,216.45

Finding the Fourth Proportional to 20,168.17, 27,832.34 and 11,216.45

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Solution

The fourth proportional to 20,168.17, 27,832.34 and 11,216.45 is: 15,478.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,168.17 : 27,832.34 = 11,216.45 : x
  2. Step 2: Convert to fraction form
    20,168.17/27,832.34 = 11,216.45/x
  3. Step 3: Cross multiply
    20,168.17x = 27,832.34 × 11,216.45
  4. Step 4: Simplify right side
    20,168.17x = 312,180,049.99
  5. Step 5: Solve for x
    x = 312,180,049.99/20,168.17
  6. Step 6: Final answer
    x = 15,478.85

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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.