Home / 20,344.05-28,076.22-11,392.38

Finding the Fourth Proportional to 20,344.05, 28,076.22 and 11,392.38

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Solution

The fourth proportional to 20,344.05, 28,076.22 and 11,392.38 is: 15,722.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,344.05 : 28,076.22 = 11,392.38 : x
  2. Step 2: Convert to fraction form
    20,344.05/28,076.22 = 11,392.38/x
  3. Step 3: Cross multiply
    20,344.05x = 28,076.22 × 11,392.38
  4. Step 4: Simplify right side
    20,344.05x = 319,854,967.20
  5. Step 5: Solve for x
    x = 319,854,967.20/20,344.05
  6. Step 6: Final answer
    x = 15,722.29

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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.