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Finding the Fourth Proportional to 18,820.96, 28,234.17 and 10,051.09

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Solution

The fourth proportional to 18,820.96, 28,234.17 and 10,051.09 is: 15,078.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,820.96 : 28,234.17 = 10,051.09 : x
  2. Step 2: Convert to fraction form
    18,820.96/28,234.17 = 10,051.09/x
  3. Step 3: Cross multiply
    18,820.96x = 28,234.17 × 10,051.09
  4. Step 4: Simplify right side
    18,820.96x = 283,784,113.16
  5. Step 5: Solve for x
    x = 283,784,113.16/18,820.96
  6. Step 6: Final answer
    x = 15,078.09

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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.