Home / 20,139.68-27,793.26-11,186.76

Finding the Fourth Proportional to 20,139.68, 27,793.26 and 11,186.76

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Solution

The fourth proportional to 20,139.68, 27,793.26 and 11,186.76 is: 15,438.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,139.68 : 27,793.26 = 11,186.76 : x
  2. Step 2: Convert to fraction form
    20,139.68/27,793.26 = 11,186.76/x
  3. Step 3: Cross multiply
    20,139.68x = 27,793.26 × 11,186.76
  4. Step 4: Simplify right side
    20,139.68x = 310,916,529.24
  5. Step 5: Solve for x
    x = 310,916,529.24/20,139.68
  6. Step 6: Final answer
    x = 15,438.01

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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.