Home / 20,108.60-30,168.98-6,257.72

Finding the Fourth Proportional to 20,108.60, 30,168.98 and 6,257.72

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Solution

The fourth proportional to 20,108.60, 30,168.98 and 6,257.72 is: 9,388.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,108.60 : 30,168.98 = 6,257.72 : x
  2. Step 2: Convert to fraction form
    20,108.60/30,168.98 = 6,257.72/x
  3. Step 3: Cross multiply
    20,108.60x = 30,168.98 × 6,257.72
  4. Step 4: Simplify right side
    20,108.60x = 188,789,029.53
  5. Step 5: Solve for x
    x = 188,789,029.53/20,108.60
  6. Step 6: Final answer
    x = 9,388.47

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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.