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Finding the Fourth Proportional to 10,900.87, 16,329.11 and 9,992.66

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Solution

The fourth proportional to 10,900.87, 16,329.11 and 9,992.66 is: 14,968.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,900.87 : 16,329.11 = 9,992.66 : x
  2. Step 2: Convert to fraction form
    10,900.87/16,329.11 = 9,992.66/x
  3. Step 3: Cross multiply
    10,900.87x = 16,329.11 × 9,992.66
  4. Step 4: Simplify right side
    10,900.87x = 163,171,244.33
  5. Step 5: Solve for x
    x = 163,171,244.33/10,900.87
  6. Step 6: Final answer
    x = 14,968.64

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1.5x scale

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.