Home / 20,098.20-27,735.78-11,145.84

Finding the Fourth Proportional to 20,098.20, 27,735.78 and 11,145.84

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Solution

The fourth proportional to 20,098.20, 27,735.78 and 11,145.84 is: 15,381.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,098.20 : 27,735.78 = 11,145.84 : x
  2. Step 2: Convert to fraction form
    20,098.20/27,735.78 = 11,145.84/x
  3. Step 3: Cross multiply
    20,098.20x = 27,735.78 × 11,145.84
  4. Step 4: Simplify right side
    20,098.20x = 309,138,566.16
  5. Step 5: Solve for x
    x = 309,138,566.16/20,098.20
  6. Step 6: Final answer
    x = 15,381.41

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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.