Home / 20,609.82-28,441.41-11,178.39

Finding the Fourth Proportional to 20,609.82, 28,441.41 and 11,178.39

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Solution

The fourth proportional to 20,609.82, 28,441.41 and 11,178.39 is: 15,426.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,609.82 : 28,441.41 = 11,178.39 : x
  2. Step 2: Convert to fraction form
    20,609.82/28,441.41 = 11,178.39/x
  3. Step 3: Cross multiply
    20,609.82x = 28,441.41 × 11,178.39
  4. Step 4: Simplify right side
    20,609.82x = 317,929,173.13
  5. Step 5: Solve for x
    x = 317,929,173.13/20,609.82
  6. Step 6: Final answer
    x = 15,426.10

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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.