Home / 19,664.68-27,135.62-11,279.40

Finding the Fourth Proportional to 19,664.68, 27,135.62 and 11,279.40

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Solution

The fourth proportional to 19,664.68, 27,135.62 and 11,279.40 is: 15,564.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,664.68 : 27,135.62 = 11,279.40 : x
  2. Step 2: Convert to fraction form
    19,664.68/27,135.62 = 11,279.40/x
  3. Step 3: Cross multiply
    19,664.68x = 27,135.62 × 11,279.40
  4. Step 4: Simplify right side
    19,664.68x = 306,073,512.23
  5. Step 5: Solve for x
    x = 306,073,512.23/19,664.68
  6. Step 6: Final answer
    x = 15,564.63

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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.