Home / 20,838.60-28,757.16-19,144.13

Finding the Fourth Proportional to 20,838.60, 28,757.16 and 19,144.13

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Solution

The fourth proportional to 20,838.60, 28,757.16 and 19,144.13 is: 26,418.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,838.60 : 28,757.16 = 19,144.13 : x
  2. Step 2: Convert to fraction form
    20,838.60/28,757.16 = 19,144.13/x
  3. Step 3: Cross multiply
    20,838.60x = 28,757.16 × 19,144.13
  4. Step 4: Simplify right side
    20,838.60x = 550,530,665.69
  5. Step 5: Solve for x
    x = 550,530,665.69/20,838.60
  6. Step 6: Final answer
    x = 26,418.79

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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.