Home / 20,817.92-31,226.85-5,235.54

Finding the Fourth Proportional to 20,817.92, 31,226.85 and 5,235.54

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Solution

The fourth proportional to 20,817.92, 31,226.85 and 5,235.54 is: 7,853.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,817.92 : 31,226.85 = 5,235.54 : x
  2. Step 2: Convert to fraction form
    20,817.92/31,226.85 = 5,235.54/x
  3. Step 3: Cross multiply
    20,817.92x = 31,226.85 × 5,235.54
  4. Step 4: Simplify right side
    20,817.92x = 163,489,422.25
  5. Step 5: Solve for x
    x = 163,489,422.25/20,817.92
  6. Step 6: Final answer
    x = 7,853.30

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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.