Home / 20,213.37-27,884.91-13,137.21

Finding the Fourth Proportional to 20,213.37, 27,884.91 and 13,137.21

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Solution

The fourth proportional to 20,213.37, 27,884.91 and 13,137.21 is: 18,123.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,213.37 : 27,884.91 = 13,137.21 : x
  2. Step 2: Convert to fraction form
    20,213.37/27,884.91 = 13,137.21/x
  3. Step 3: Cross multiply
    20,213.37x = 27,884.91 × 13,137.21
  4. Step 4: Simplify right side
    20,213.37x = 366,329,918.50
  5. Step 5: Solve for x
    x = 366,329,918.50/20,213.37
  6. Step 6: Final answer
    x = 18,123.15

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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.