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Finding the Fourth Proportional to 18,807.22, 28,211.14 and 8,944.50

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Solution

The fourth proportional to 18,807.22, 28,211.14 and 8,944.50 is: 13,416.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,807.22 : 28,211.14 = 8,944.50 : x
  2. Step 2: Convert to fraction form
    18,807.22/28,211.14 = 8,944.50/x
  3. Step 3: Cross multiply
    18,807.22x = 28,211.14 × 8,944.50
  4. Step 4: Simplify right side
    18,807.22x = 252,334,541.73
  5. Step 5: Solve for x
    x = 252,334,541.73/18,807.22
  6. Step 6: Final answer
    x = 13,416.90

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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.