Home / 20,274.15-27,979.71-11,321.46

Finding the Fourth Proportional to 20,274.15, 27,979.71 and 11,321.46

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Solution

The fourth proportional to 20,274.15, 27,979.71 and 11,321.46 is: 15,624.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,274.15 : 27,979.71 = 11,321.46 : x
  2. Step 2: Convert to fraction form
    20,274.15/27,979.71 = 11,321.46/x
  3. Step 3: Cross multiply
    20,274.15x = 27,979.71 × 11,321.46
  4. Step 4: Simplify right side
    20,274.15x = 316,771,167.58
  5. Step 5: Solve for x
    x = 316,771,167.58/20,274.15
  6. Step 6: Final answer
    x = 15,624.39

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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.