Home / 20,357.91-28,084.07-16,778.52

Finding the Fourth Proportional to 20,357.91, 28,084.07 and 16,778.52

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Solution

The fourth proportional to 20,357.91, 28,084.07 and 16,778.52 is: 23,146.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,357.91 : 28,084.07 = 16,778.52 : x
  2. Step 2: Convert to fraction form
    20,357.91/28,084.07 = 16,778.52/x
  3. Step 3: Cross multiply
    20,357.91x = 28,084.07 × 16,778.52
  4. Step 4: Simplify right side
    20,357.91x = 471,209,046.28
  5. Step 5: Solve for x
    x = 471,209,046.28/20,357.91
  6. Step 6: Final answer
    x = 23,146.24

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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.