Home / 20,146.54-30,220.09-5,355.39

Finding the Fourth Proportional to 20,146.54, 30,220.09 and 5,355.39

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Solution

The fourth proportional to 20,146.54, 30,220.09 and 5,355.39 is: 8,033.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,146.54 : 30,220.09 = 5,355.39 : x
  2. Step 2: Convert to fraction form
    20,146.54/30,220.09 = 5,355.39/x
  3. Step 3: Cross multiply
    20,146.54x = 30,220.09 × 5,355.39
  4. Step 4: Simplify right side
    20,146.54x = 161,840,216.68
  5. Step 5: Solve for x
    x = 161,840,216.68/20,146.54
  6. Step 6: Final answer
    x = 8,033.15

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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.