Home / 28,086.83-38,759.89-15,340.11

Finding the Fourth Proportional to 28,086.83, 38,759.89 and 15,340.11

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Solution

The fourth proportional to 28,086.83, 38,759.89 and 15,340.11 is: 21,169.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,086.83 : 38,759.89 = 15,340.11 : x
  2. Step 2: Convert to fraction form
    28,086.83/38,759.89 = 15,340.11/x
  3. Step 3: Cross multiply
    28,086.83x = 38,759.89 × 15,340.11
  4. Step 4: Simplify right side
    28,086.83x = 594,580,976.19
  5. Step 5: Solve for x
    x = 594,580,976.19/28,086.83
  6. Step 6: Final answer
    x = 21,169.39

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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.