Home / 19,917.68-29,862.66-8,818.30

Finding the Fourth Proportional to 19,917.68, 29,862.66 and 8,818.30

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Solution

The fourth proportional to 19,917.68, 29,862.66 and 8,818.30 is: 13,221.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,917.68 : 29,862.66 = 8,818.30 : x
  2. Step 2: Convert to fraction form
    19,917.68/29,862.66 = 8,818.30/x
  3. Step 3: Cross multiply
    19,917.68x = 29,862.66 × 8,818.30
  4. Step 4: Simplify right side
    19,917.68x = 263,337,965.07
  5. Step 5: Solve for x
    x = 263,337,965.07/19,917.68
  6. Step 6: Final answer
    x = 13,221.32

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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.