Home / 19,917.18-29,875.78-8,217.54

Finding the Fourth Proportional to 19,917.18, 29,875.78 and 8,217.54

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Solution

The fourth proportional to 19,917.18, 29,875.78 and 8,217.54 is: 12,326.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,917.18 : 29,875.78 = 8,217.54 : x
  2. Step 2: Convert to fraction form
    19,917.18/29,875.78 = 8,217.54/x
  3. Step 3: Cross multiply
    19,917.18x = 29,875.78 × 8,217.54
  4. Step 4: Simplify right side
    19,917.18x = 245,505,417.18
  5. Step 5: Solve for x
    x = 245,505,417.18/19,917.18
  6. Step 6: Final answer
    x = 12,326.31

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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.