Home / 20,146.98-30,220.45-5,355.91

Finding the Fourth Proportional to 20,146.98, 30,220.45 and 5,355.91

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Solution

The fourth proportional to 20,146.98, 30,220.45 and 5,355.91 is: 8,033.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,146.98 : 30,220.45 = 5,355.91 : x
  2. Step 2: Convert to fraction form
    20,146.98/30,220.45 = 5,355.91/x
  3. Step 3: Cross multiply
    20,146.98x = 30,220.45 × 5,355.91
  4. Step 4: Simplify right side
    20,146.98x = 161,858,034.75
  5. Step 5: Solve for x
    x = 161,858,034.75/20,146.98
  6. Step 6: Final answer
    x = 8,033.86

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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.