Home / 20,571.52-28,362.18-16,790.80

Finding the Fourth Proportional to 20,571.52, 28,362.18 and 16,790.80

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Solution

The fourth proportional to 20,571.52, 28,362.18 and 16,790.80 is: 23,149.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,571.52 : 28,362.18 = 16,790.80 : x
  2. Step 2: Convert to fraction form
    20,571.52/28,362.18 = 16,790.80/x
  3. Step 3: Cross multiply
    20,571.52x = 28,362.18 × 16,790.80
  4. Step 4: Simplify right side
    20,571.52x = 476,223,691.94
  5. Step 5: Solve for x
    x = 476,223,691.94/20,571.52
  6. Step 6: Final answer
    x = 23,149.66

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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.