Home / 20,074.24-27,702-11,121.76

Finding the Fourth Proportional to 20,074.24, 27,702 and 11,121.76

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Solution

The fourth proportional to 20,074.24, 27,702 and 11,121.76 is: 15,347.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,074.24 : 27,702 = 11,121.76 : x
  2. Step 2: Convert to fraction form
    20,074.24/27,702 = 11,121.76/x
  3. Step 3: Cross multiply
    20,074.24x = 27,702 × 11,121.76
  4. Step 4: Simplify right side
    20,074.24x = 308,094,995.52
  5. Step 5: Solve for x
    x = 308,094,995.52/20,074.24
  6. Step 6: Final answer
    x = 15,347.78

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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.