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Finding the Fourth Proportional to 12,520.15, 18,777.15 and 4,199.98

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Solution

The fourth proportional to 12,520.15, 18,777.15 and 4,199.98 is: 6,298.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,520.15 : 18,777.15 = 4,199.98 : x
  2. Step 2: Convert to fraction form
    12,520.15/18,777.15 = 4,199.98/x
  3. Step 3: Cross multiply
    12,520.15x = 18,777.15 × 4,199.98
  4. Step 4: Simplify right side
    12,520.15x = 78,863,591.76
  5. Step 5: Solve for x
    x = 78,863,591.76/12,520.15
  6. Step 6: Final answer
    x = 6,298.93

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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.