Home / 19,919.30-27,489.87-10,968.80

Finding the Fourth Proportional to 19,919.30, 27,489.87 and 10,968.80

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Solution

The fourth proportional to 19,919.30, 27,489.87 and 10,968.80 is: 15,137.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,919.30 : 27,489.87 = 10,968.80 : x
  2. Step 2: Convert to fraction form
    19,919.30/27,489.87 = 10,968.80/x
  3. Step 3: Cross multiply
    19,919.30x = 27,489.87 × 10,968.80
  4. Step 4: Simplify right side
    19,919.30x = 301,530,748.61
  5. Step 5: Solve for x
    x = 301,530,748.61/19,919.30
  6. Step 6: Final answer
    x = 15,137.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.