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Finding the Fourth Proportional to 20,600.13, 30,881.86 and 7,449.58

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Solution

The fourth proportional to 20,600.13, 30,881.86 and 7,449.58 is: 11,167.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,600.13 : 30,881.86 = 7,449.58 : x
  2. Step 2: Convert to fraction form
    20,600.13/30,881.86 = 7,449.58/x
  3. Step 3: Cross multiply
    20,600.13x = 30,881.86 × 7,449.58
  4. Step 4: Simplify right side
    20,600.13x = 230,056,886.62
  5. Step 5: Solve for x
    x = 230,056,886.62/20,600.13
  6. Step 6: Final answer
    x = 11,167.74

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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.