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Finding the Fourth Proportional to 13,595.92, 20,391.45 and 8,650.87

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Solution

The fourth proportional to 13,595.92, 20,391.45 and 8,650.87 is: 12,974.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,595.92 : 20,391.45 = 8,650.87 : x
  2. Step 2: Convert to fraction form
    13,595.92/20,391.45 = 8,650.87/x
  3. Step 3: Cross multiply
    13,595.92x = 20,391.45 × 8,650.87
  4. Step 4: Simplify right side
    13,595.92x = 176,403,783.06
  5. Step 5: Solve for x
    x = 176,403,783.06/13,595.92
  6. Step 6: Final answer
    x = 12,974.76

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.