Home / 19,878.74-29,799.56-6,721.91

Finding the Fourth Proportional to 19,878.74, 29,799.56 and 6,721.91

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Solution

The fourth proportional to 19,878.74, 29,799.56 and 6,721.91 is: 10,076.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,878.74 : 29,799.56 = 6,721.91 : x
  2. Step 2: Convert to fraction form
    19,878.74/29,799.56 = 6,721.91/x
  3. Step 3: Cross multiply
    19,878.74x = 29,799.56 × 6,721.91
  4. Step 4: Simplify right side
    19,878.74x = 200,309,777.75
  5. Step 5: Solve for x
    x = 200,309,777.75/19,878.74
  6. Step 6: Final answer
    x = 10,076.59

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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.