Home / 11,117.72-16,676.40-5,278.52

Finding the Fourth Proportional to 11,117.72, 16,676.40 and 5,278.52

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Solution

The fourth proportional to 11,117.72, 16,676.40 and 5,278.52 is: 7,917.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,117.72 : 16,676.40 = 5,278.52 : x
  2. Step 2: Convert to fraction form
    11,117.72/16,676.40 = 5,278.52/x
  3. Step 3: Cross multiply
    11,117.72x = 16,676.40 × 5,278.52
  4. Step 4: Simplify right side
    11,117.72x = 88,026,710.93
  5. Step 5: Solve for x
    x = 88,026,710.93/11,117.72
  6. Step 6: Final answer
    x = 7,917.69

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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.