Home / 20,186.74-30,281.20-6,145.70

Finding the Fourth Proportional to 20,186.74, 30,281.20 and 6,145.70

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Solution

The fourth proportional to 20,186.74, 30,281.20 and 6,145.70 is: 9,218.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,186.74 : 30,281.20 = 6,145.70 : x
  2. Step 2: Convert to fraction form
    20,186.74/30,281.20 = 6,145.70/x
  3. Step 3: Cross multiply
    20,186.74x = 30,281.20 × 6,145.70
  4. Step 4: Simplify right side
    20,186.74x = 186,099,170.84
  5. Step 5: Solve for x
    x = 186,099,170.84/20,186.74
  6. Step 6: Final answer
    x = 9,218.88

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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.