Home / 20,282.75-30,429.03-6,431.75

Finding the Fourth Proportional to 20,282.75, 30,429.03 and 6,431.75

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Solution

The fourth proportional to 20,282.75, 30,429.03 and 6,431.75 is: 9,649.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,282.75 : 30,429.03 = 6,431.75 : x
  2. Step 2: Convert to fraction form
    20,282.75/30,429.03 = 6,431.75/x
  3. Step 3: Cross multiply
    20,282.75x = 30,429.03 × 6,431.75
  4. Step 4: Simplify right side
    20,282.75x = 195,711,913.70
  5. Step 5: Solve for x
    x = 195,711,913.70/20,282.75
  6. Step 6: Final answer
    x = 9,649.18

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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.