Home / 13,453.86-20,137.62-7,198.22

Finding the Fourth Proportional to 13,453.86, 20,137.62 and 7,198.22

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Solution

The fourth proportional to 13,453.86, 20,137.62 and 7,198.22 is: 10,774.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,453.86 : 20,137.62 = 7,198.22 : x
  2. Step 2: Convert to fraction form
    13,453.86/20,137.62 = 7,198.22/x
  3. Step 3: Cross multiply
    13,453.86x = 20,137.62 × 7,198.22
  4. Step 4: Simplify right side
    13,453.86x = 144,955,019.04
  5. Step 5: Solve for x
    x = 144,955,019.04/13,453.86
  6. Step 6: Final answer
    x = 10,774.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.