Home / 21,863.57-30,173.37-13,367.30

Finding the Fourth Proportional to 21,863.57, 30,173.37 and 13,367.30

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Solution

The fourth proportional to 21,863.57, 30,173.37 and 13,367.30 is: 18,447.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,863.57 : 30,173.37 = 13,367.30 : x
  2. Step 2: Convert to fraction form
    21,863.57/30,173.37 = 13,367.30/x
  3. Step 3: Cross multiply
    21,863.57x = 30,173.37 × 13,367.30
  4. Step 4: Simplify right side
    21,863.57x = 403,336,337.93
  5. Step 5: Solve for x
    x = 403,336,337.93/21,863.57
  6. Step 6: Final answer
    x = 18,447.88

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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.