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Finding the Fourth Proportional to 13,508.16, 20,262.03 and 6,930.55

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Solution

The fourth proportional to 13,508.16, 20,262.03 and 6,930.55 is: 10,395.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,508.16 : 20,262.03 = 6,930.55 : x
  2. Step 2: Convert to fraction form
    13,508.16/20,262.03 = 6,930.55/x
  3. Step 3: Cross multiply
    13,508.16x = 20,262.03 × 6,930.55
  4. Step 4: Simplify right side
    13,508.16x = 140,427,012.02
  5. Step 5: Solve for x
    x = 140,427,012.02/13,508.16
  6. Step 6: Final answer
    x = 10,395.72

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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.