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Finding the Fourth Proportional to 10,950.60, 16,425.90 and 5,107.80

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Solution

The fourth proportional to 10,950.60, 16,425.90 and 5,107.80 is: 7,661.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,950.60 : 16,425.90 = 5,107.80 : x
  2. Step 2: Convert to fraction form
    10,950.60/16,425.90 = 5,107.80/x
  3. Step 3: Cross multiply
    10,950.60x = 16,425.90 × 5,107.80
  4. Step 4: Simplify right side
    10,950.60x = 83,900,212.02
  5. Step 5: Solve for x
    x = 83,900,212.02/10,950.60
  6. Step 6: Final answer
    x = 7,661.70

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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.