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Finding the Fourth Proportional to 20,498.92, 30,748.38 and 6,648.04

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Solution

The fourth proportional to 20,498.92, 30,748.38 and 6,648.04 is: 9,972.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,498.92 : 30,748.38 = 6,648.04 : x
  2. Step 2: Convert to fraction form
    20,498.92/30,748.38 = 6,648.04/x
  3. Step 3: Cross multiply
    20,498.92x = 30,748.38 × 6,648.04
  4. Step 4: Simplify right side
    20,498.92x = 204,416,460.18
  5. Step 5: Solve for x
    x = 204,416,460.18/20,498.92
  6. Step 6: Final answer
    x = 9,972.06

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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.