Home / 20,200.81-30,306.13-6,161.09

Finding the Fourth Proportional to 20,200.81, 30,306.13 and 6,161.09

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Solution

The fourth proportional to 20,200.81, 30,306.13 and 6,161.09 is: 9,243.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,200.81 : 30,306.13 = 6,161.09 : x
  2. Step 2: Convert to fraction form
    20,200.81/30,306.13 = 6,161.09/x
  3. Step 3: Cross multiply
    20,200.81x = 30,306.13 × 6,161.09
  4. Step 4: Simplify right side
    20,200.81x = 186,718,794.48
  5. Step 5: Solve for x
    x = 186,718,794.48/20,200.81
  6. Step 6: Final answer
    x = 9,243.13

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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.