Home / 13,511.40-20,249.17-7,184.96

Finding the Fourth Proportional to 13,511.40, 20,249.17 and 7,184.96

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Solution

The fourth proportional to 13,511.40, 20,249.17 and 7,184.96 is: 10,767.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,511.40 : 20,249.17 = 7,184.96 : x
  2. Step 2: Convert to fraction form
    13,511.40/20,249.17 = 7,184.96/x
  3. Step 3: Cross multiply
    13,511.40x = 20,249.17 × 7,184.96
  4. Step 4: Simplify right side
    13,511.40x = 145,489,476.48
  5. Step 5: Solve for x
    x = 145,489,476.48/13,511.40
  6. Step 6: Final answer
    x = 10,767.91

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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.