Home / 19,917.54-27,486.05-10,965.20

Finding the Fourth Proportional to 19,917.54, 27,486.05 and 10,965.20

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Solution

The fourth proportional to 19,917.54, 27,486.05 and 10,965.20 is: 15,131.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,917.54 : 27,486.05 = 10,965.20 : x
  2. Step 2: Convert to fraction form
    19,917.54/27,486.05 = 10,965.20/x
  3. Step 3: Cross multiply
    19,917.54x = 27,486.05 × 10,965.20
  4. Step 4: Simplify right side
    19,917.54x = 301,389,843.20
  5. Step 5: Solve for x
    x = 301,389,843.20/19,917.54
  6. Step 6: Final answer
    x = 15,131.88

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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.