Home / 19,917.76-29,876.64-6,779.56

Finding the Fourth Proportional to 19,917.76, 29,876.64 and 6,779.56

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Solution

The fourth proportional to 19,917.76, 29,876.64 and 6,779.56 is: 10,169.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,917.76 : 29,876.64 = 6,779.56 : x
  2. Step 2: Convert to fraction form
    19,917.76/29,876.64 = 6,779.56/x
  3. Step 3: Cross multiply
    19,917.76x = 29,876.64 × 6,779.56
  4. Step 4: Simplify right side
    19,917.76x = 202,550,473.48
  5. Step 5: Solve for x
    x = 202,550,473.48/19,917.76
  6. Step 6: Final answer
    x = 10,169.34

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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.