Home / 16,890.30-25,302.64-8,131.36

Finding the Fourth Proportional to 16,890.30, 25,302.64 and 8,131.36

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Solution

The fourth proportional to 16,890.30, 25,302.64 and 8,131.36 is: 12,181.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,890.30 : 25,302.64 = 8,131.36 : x
  2. Step 2: Convert to fraction form
    16,890.30/25,302.64 = 8,131.36/x
  3. Step 3: Cross multiply
    16,890.30x = 25,302.64 × 8,131.36
  4. Step 4: Simplify right side
    16,890.30x = 205,744,874.79
  5. Step 5: Solve for x
    x = 205,744,874.79/16,890.30
  6. Step 6: Final answer
    x = 12,181.24

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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.