Home / 13,633.45-20,456.14-6,618.85

Finding the Fourth Proportional to 13,633.45, 20,456.14 and 6,618.85

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Solution

The fourth proportional to 13,633.45, 20,456.14 and 6,618.85 is: 9,931.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,633.45 : 20,456.14 = 6,618.85 : x
  2. Step 2: Convert to fraction form
    13,633.45/20,456.14 = 6,618.85/x
  3. Step 3: Cross multiply
    13,633.45x = 20,456.14 × 6,618.85
  4. Step 4: Simplify right side
    13,633.45x = 135,396,122.24
  5. Step 5: Solve for x
    x = 135,396,122.24/13,633.45
  6. Step 6: Final answer
    x = 9,931.17

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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.