Home / 19,786.62-29,684.38-6,638.66

Finding the Fourth Proportional to 19,786.62, 29,684.38 and 6,638.66

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Solution

The fourth proportional to 19,786.62, 29,684.38 and 6,638.66 is: 9,959.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,786.62 : 29,684.38 = 6,638.66 : x
  2. Step 2: Convert to fraction form
    19,786.62/29,684.38 = 6,638.66/x
  3. Step 3: Cross multiply
    19,786.62x = 29,684.38 × 6,638.66
  4. Step 4: Simplify right side
    19,786.62x = 197,064,506.13
  5. Step 5: Solve for x
    x = 197,064,506.13/19,786.62
  6. Step 6: Final answer
    x = 9,959.48

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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.