Home / 19,920.90-27,490.44-10,968.55

Finding the Fourth Proportional to 19,920.90, 27,490.44 and 10,968.55

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Solution

The fourth proportional to 19,920.90, 27,490.44 and 10,968.55 is: 15,136.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,920.90 : 27,490.44 = 10,968.55 : x
  2. Step 2: Convert to fraction form
    19,920.90/27,490.44 = 10,968.55/x
  3. Step 3: Cross multiply
    19,920.90x = 27,490.44 × 10,968.55
  4. Step 4: Simplify right side
    19,920.90x = 301,530,265.66
  5. Step 5: Solve for x
    x = 301,530,265.66/19,920.90
  6. Step 6: Final answer
    x = 15,136.38

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1.5x scale

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.