Home / 20,775.72-28,700.82-17,976.36

Finding the Fourth Proportional to 20,775.72, 28,700.82 and 17,976.36

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Solution

The fourth proportional to 20,775.72, 28,700.82 and 17,976.36 is: 24,833.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,775.72 : 28,700.82 = 17,976.36 : x
  2. Step 2: Convert to fraction form
    20,775.72/28,700.82 = 17,976.36/x
  3. Step 3: Cross multiply
    20,775.72x = 28,700.82 × 17,976.36
  4. Step 4: Simplify right side
    20,775.72x = 515,936,272.62
  5. Step 5: Solve for x
    x = 515,936,272.62/20,775.72
  6. Step 6: Final answer
    x = 24,833.62

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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.