Home / 20,270.18-30,405.42-6,419.18

Finding the Fourth Proportional to 20,270.18, 30,405.42 and 6,419.18

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Solution

The fourth proportional to 20,270.18, 30,405.42 and 6,419.18 is: 9,628.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,270.18 : 30,405.42 = 6,419.18 : x
  2. Step 2: Convert to fraction form
    20,270.18/30,405.42 = 6,419.18/x
  3. Step 3: Cross multiply
    20,270.18x = 30,405.42 × 6,419.18
  4. Step 4: Simplify right side
    20,270.18x = 195,177,863.96
  5. Step 5: Solve for x
    x = 195,177,863.96/20,270.18
  6. Step 6: Final answer
    x = 9,628.82

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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.