Home / 13,785.68-20,645.72-7,536.36

Finding the Fourth Proportional to 13,785.68, 20,645.72 and 7,536.36

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Solution

The fourth proportional to 13,785.68, 20,645.72 and 7,536.36 is: 11,286.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,785.68 : 20,645.72 = 7,536.36 : x
  2. Step 2: Convert to fraction form
    13,785.68/20,645.72 = 7,536.36/x
  3. Step 3: Cross multiply
    13,785.68x = 20,645.72 × 7,536.36
  4. Step 4: Simplify right side
    13,785.68x = 155,593,578.38
  5. Step 5: Solve for x
    x = 155,593,578.38/13,785.68
  6. Step 6: Final answer
    x = 11,286.61

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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.