Home / 11,167.90-16,715.40-8,689.30

Finding the Fourth Proportional to 11,167.90, 16,715.40 and 8,689.30

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Solution

The fourth proportional to 11,167.90, 16,715.40 and 8,689.30 is: 13,005.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,167.90 : 16,715.40 = 8,689.30 : x
  2. Step 2: Convert to fraction form
    11,167.90/16,715.40 = 8,689.30/x
  3. Step 3: Cross multiply
    11,167.90x = 16,715.40 × 8,689.30
  4. Step 4: Simplify right side
    11,167.90x = 145,245,125.22
  5. Step 5: Solve for x
    x = 145,245,125.22/11,167.90
  6. Step 6: Final answer
    x = 13,005.59

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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.