Home / 20,866.96-28,797.14-11,435.52

Finding the Fourth Proportional to 20,866.96, 28,797.14 and 11,435.52

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Solution

The fourth proportional to 20,866.96, 28,797.14 and 11,435.52 is: 15,781.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,866.96 : 28,797.14 = 11,435.52 : x
  2. Step 2: Convert to fraction form
    20,866.96/28,797.14 = 11,435.52/x
  3. Step 3: Cross multiply
    20,866.96x = 28,797.14 × 11,435.52
  4. Step 4: Simplify right side
    20,866.96x = 329,310,213.24
  5. Step 5: Solve for x
    x = 329,310,213.24/20,866.96
  6. Step 6: Final answer
    x = 15,781.42

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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.