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Finding the Fourth Proportional to 20,274.64, 27,979.02 and 11,322.13

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Solution

The fourth proportional to 20,274.64, 27,979.02 and 11,322.13 is: 15,624.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,274.64 : 27,979.02 = 11,322.13 : x
  2. Step 2: Convert to fraction form
    20,274.64/27,979.02 = 11,322.13/x
  3. Step 3: Cross multiply
    20,274.64x = 27,979.02 × 11,322.13
  4. Step 4: Simplify right side
    20,274.64x = 316,782,101.71
  5. Step 5: Solve for x
    x = 316,782,101.71/20,274.64
  6. Step 6: Final answer
    x = 15,624.55

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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.