Home / 20,274.59-27,979.07-11,322.20

Finding the Fourth Proportional to 20,274.59, 27,979.07 and 11,322.20

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Solution

The fourth proportional to 20,274.59, 27,979.07 and 11,322.20 is: 15,624.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,274.59 : 27,979.07 = 11,322.20 : x
  2. Step 2: Convert to fraction form
    20,274.59/27,979.07 = 11,322.20/x
  3. Step 3: Cross multiply
    20,274.59x = 27,979.07 × 11,322.20
  4. Step 4: Simplify right side
    20,274.59x = 316,784,626.35
  5. Step 5: Solve for x
    x = 316,784,626.35/20,274.59
  6. Step 6: Final answer
    x = 15,624.71

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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.