Home / 13,221.32-19,836.30-10,309.64

Finding the Fourth Proportional to 13,221.32, 19,836.30 and 10,309.64

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Solution

The fourth proportional to 13,221.32, 19,836.30 and 10,309.64 is: 15,467.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,221.32 : 19,836.30 = 10,309.64 : x
  2. Step 2: Convert to fraction form
    13,221.32/19,836.30 = 10,309.64/x
  3. Step 3: Cross multiply
    13,221.32x = 19,836.30 × 10,309.64
  4. Step 4: Simplify right side
    13,221.32x = 204,505,111.93
  5. Step 5: Solve for x
    x = 204,505,111.93/13,221.32
  6. Step 6: Final answer
    x = 15,467.83

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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.