Home / 20,656.43-28,505.90-11,704.54

Finding the Fourth Proportional to 20,656.43, 28,505.90 and 11,704.54

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Solution

The fourth proportional to 20,656.43, 28,505.90 and 11,704.54 is: 16,152.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,656.43 : 28,505.90 = 11,704.54 : x
  2. Step 2: Convert to fraction form
    20,656.43/28,505.90 = 11,704.54/x
  3. Step 3: Cross multiply
    20,656.43x = 28,505.90 × 11,704.54
  4. Step 4: Simplify right side
    20,656.43x = 333,648,476.05
  5. Step 5: Solve for x
    x = 333,648,476.05/20,656.43
  6. Step 6: Final answer
    x = 16,152.28

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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.