Home / 20,105.64-27,746.01-11,153.43

Finding the Fourth Proportional to 20,105.64, 27,746.01 and 11,153.43

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Solution

The fourth proportional to 20,105.64, 27,746.01 and 11,153.43 is: 15,391.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,105.64 : 27,746.01 = 11,153.43 : x
  2. Step 2: Convert to fraction form
    20,105.64/27,746.01 = 11,153.43/x
  3. Step 3: Cross multiply
    20,105.64x = 27,746.01 × 11,153.43
  4. Step 4: Simplify right side
    20,105.64x = 309,463,180.31
  5. Step 5: Solve for x
    x = 309,463,180.31/20,105.64
  6. Step 6: Final answer
    x = 15,391.86

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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.