Home / 11,402.57-17,109.77-8,628.41

Finding the Fourth Proportional to 11,402.57, 17,109.77 and 8,628.41

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Solution

The fourth proportional to 11,402.57, 17,109.77 and 8,628.41 is: 12,947.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,402.57 : 17,109.77 = 8,628.41 : x
  2. Step 2: Convert to fraction form
    11,402.57/17,109.77 = 8,628.41/x
  3. Step 3: Cross multiply
    11,402.57x = 17,109.77 × 8,628.41
  4. Step 4: Simplify right side
    11,402.57x = 147,629,981.87
  5. Step 5: Solve for x
    x = 147,629,981.87/11,402.57
  6. Step 6: Final answer
    x = 12,947.09

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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.