Home / 11,278.63-16,917.85-8,815.52

Finding the Fourth Proportional to 11,278.63, 16,917.85 and 8,815.52

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Solution

The fourth proportional to 11,278.63, 16,917.85 and 8,815.52 is: 13,223.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,278.63 : 16,917.85 = 8,815.52 : x
  2. Step 2: Convert to fraction form
    11,278.63/16,917.85 = 8,815.52/x
  3. Step 3: Cross multiply
    11,278.63x = 16,917.85 × 8,815.52
  4. Step 4: Simplify right side
    11,278.63x = 149,139,645.03
  5. Step 5: Solve for x
    x = 149,139,645.03/11,278.63
  6. Step 6: Final answer
    x = 13,223.21

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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.