Home / 20,281.62-30,422.30-5,490.48

Finding the Fourth Proportional to 20,281.62, 30,422.30 and 5,490.48

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Solution

The fourth proportional to 20,281.62, 30,422.30 and 5,490.48 is: 8,235.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,281.62 : 30,422.30 = 5,490.48 : x
  2. Step 2: Convert to fraction form
    20,281.62/30,422.30 = 5,490.48/x
  3. Step 3: Cross multiply
    20,281.62x = 30,422.30 × 5,490.48
  4. Step 4: Simplify right side
    20,281.62x = 167,033,002.25
  5. Step 5: Solve for x
    x = 167,033,002.25/20,281.62
  6. Step 6: Final answer
    x = 8,235.68

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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.