Home / 20,489.62-28,273.33-11,536.89

Finding the Fourth Proportional to 20,489.62, 28,273.33 and 11,536.89

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Solution

The fourth proportional to 20,489.62, 28,273.33 and 11,536.89 is: 15,919.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,489.62 : 28,273.33 = 11,536.89 : x
  2. Step 2: Convert to fraction form
    20,489.62/28,273.33 = 11,536.89/x
  3. Step 3: Cross multiply
    20,489.62x = 28,273.33 × 11,536.89
  4. Step 4: Simplify right side
    20,489.62x = 326,186,298.14
  5. Step 5: Solve for x
    x = 326,186,298.14/20,489.62
  6. Step 6: Final answer
    x = 15,919.59

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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.