Home / 20,791.72-28,699.41-16,550.56

Finding the Fourth Proportional to 20,791.72, 28,699.41 and 16,550.56

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Solution

The fourth proportional to 20,791.72, 28,699.41 and 16,550.56 is: 22,845.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,791.72 : 28,699.41 = 16,550.56 : x
  2. Step 2: Convert to fraction form
    20,791.72/28,699.41 = 16,550.56/x
  3. Step 3: Cross multiply
    20,791.72x = 28,699.41 × 16,550.56
  4. Step 4: Simplify right side
    20,791.72x = 474,991,307.17
  5. Step 5: Solve for x
    x = 474,991,307.17/20,791.72
  6. Step 6: Final answer
    x = 22,845.21

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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.