Home / 20,143.86-27,799.71-11,192.34

Finding the Fourth Proportional to 20,143.86, 27,799.71 and 11,192.34

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Solution

The fourth proportional to 20,143.86, 27,799.71 and 11,192.34 is: 15,446.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,143.86 : 27,799.71 = 11,192.34 : x
  2. Step 2: Convert to fraction form
    20,143.86/27,799.71 = 11,192.34/x
  3. Step 3: Cross multiply
    20,143.86x = 27,799.71 × 11,192.34
  4. Step 4: Simplify right side
    20,143.86x = 311,143,806.22
  5. Step 5: Solve for x
    x = 311,143,806.22/20,143.86
  6. Step 6: Final answer
    x = 15,446.09

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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.