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Finding the Fourth Proportional to 16,991.40, 25,500.19 and 8,566.51

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Solution

The fourth proportional to 16,991.40, 25,500.19 and 8,566.51 is: 12,856.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,991.40 : 25,500.19 = 8,566.51 : x
  2. Step 2: Convert to fraction form
    16,991.40/25,500.19 = 8,566.51/x
  3. Step 3: Cross multiply
    16,991.40x = 25,500.19 × 8,566.51
  4. Step 4: Simplify right side
    16,991.40x = 218,447,635.44
  5. Step 5: Solve for x
    x = 218,447,635.44/16,991.40
  6. Step 6: Final answer
    x = 12,856.37

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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.