Home / 21,837.29-30,137.97-12,147.71

Finding the Fourth Proportional to 21,837.29, 30,137.97 and 12,147.71

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Solution

The fourth proportional to 21,837.29, 30,137.97 and 12,147.71 is: 16,765.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,837.29 : 30,137.97 = 12,147.71 : x
  2. Step 2: Convert to fraction form
    21,837.29/30,137.97 = 12,147.71/x
  3. Step 3: Cross multiply
    21,837.29x = 30,137.97 × 12,147.71
  4. Step 4: Simplify right side
    21,837.29x = 366,107,319.55
  5. Step 5: Solve for x
    x = 366,107,319.55/21,837.29
  6. Step 6: Final answer
    x = 16,765.24

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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.