Home / 20,126.88-30,186.17-6,974.81

Finding the Fourth Proportional to 20,126.88, 30,186.17 and 6,974.81

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Solution

The fourth proportional to 20,126.88, 30,186.17 and 6,974.81 is: 10,460.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,126.88 : 30,186.17 = 6,974.81 : x
  2. Step 2: Convert to fraction form
    20,126.88/30,186.17 = 6,974.81/x
  3. Step 3: Cross multiply
    20,126.88x = 30,186.17 × 6,974.81
  4. Step 4: Simplify right side
    20,126.88x = 210,542,753.93
  5. Step 5: Solve for x
    x = 210,542,753.93/20,126.88
  6. Step 6: Final answer
    x = 10,460.77

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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.