Home / 20,106.40-27,744.78-11,151.64

Finding the Fourth Proportional to 20,106.40, 27,744.78 and 11,151.64

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Solution

The fourth proportional to 20,106.40, 27,744.78 and 11,151.64 is: 15,388.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,106.40 : 27,744.78 = 11,151.64 : x
  2. Step 2: Convert to fraction form
    20,106.40/27,744.78 = 11,151.64/x
  3. Step 3: Cross multiply
    20,106.40x = 27,744.78 × 11,151.64
  4. Step 4: Simplify right side
    20,106.40x = 309,399,798.44
  5. Step 5: Solve for x
    x = 309,399,798.44/20,106.40
  6. Step 6: Final answer
    x = 15,388.13

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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.