Home / 11,217.72-16,818.48-3,422.28

Finding the Fourth Proportional to 11,217.72, 16,818.48 and 3,422.28

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Solution

The fourth proportional to 11,217.72, 16,818.48 and 3,422.28 is: 5,130.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,217.72 : 16,818.48 = 3,422.28 : x
  2. Step 2: Convert to fraction form
    11,217.72/16,818.48 = 3,422.28/x
  3. Step 3: Cross multiply
    11,217.72x = 16,818.48 × 3,422.28
  4. Step 4: Simplify right side
    11,217.72x = 57,557,547.73
  5. Step 5: Solve for x
    x = 57,557,547.73/11,217.72
  6. Step 6: Final answer
    x = 5,130.95

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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.