Home / 20,231.81-30,351.35-6,191.57

Finding the Fourth Proportional to 20,231.81, 30,351.35 and 6,191.57

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Solution

The fourth proportional to 20,231.81, 30,351.35 and 6,191.57 is: 9,288.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,231.81 : 30,351.35 = 6,191.57 : x
  2. Step 2: Convert to fraction form
    20,231.81/30,351.35 = 6,191.57/x
  3. Step 3: Cross multiply
    20,231.81x = 30,351.35 × 6,191.57
  4. Step 4: Simplify right side
    20,231.81x = 187,922,599.48
  5. Step 5: Solve for x
    x = 187,922,599.48/20,231.81
  6. Step 6: Final answer
    x = 9,288.47

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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.