Home / 20,628.30-28,467.04-11,196.86

Finding the Fourth Proportional to 20,628.30, 28,467.04 and 11,196.86

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Solution

The fourth proportional to 20,628.30, 28,467.04 and 11,196.86 is: 15,451.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,628.30 : 28,467.04 = 11,196.86 : x
  2. Step 2: Convert to fraction form
    20,628.30/28,467.04 = 11,196.86/x
  3. Step 3: Cross multiply
    20,628.30x = 28,467.04 × 11,196.86
  4. Step 4: Simplify right side
    20,628.30x = 318,741,405.51
  5. Step 5: Solve for x
    x = 318,741,405.51/20,628.30
  6. Step 6: Final answer
    x = 15,451.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.