Home / 20,425.54-28,184.77-11,350.85

Finding the Fourth Proportional to 20,425.54, 28,184.77 and 11,350.85

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Solution

The fourth proportional to 20,425.54, 28,184.77 and 11,350.85 is: 15,662.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,425.54 : 28,184.77 = 11,350.85 : x
  2. Step 2: Convert to fraction form
    20,425.54/28,184.77 = 11,350.85/x
  3. Step 3: Cross multiply
    20,425.54x = 28,184.77 × 11,350.85
  4. Step 4: Simplify right side
    20,425.54x = 319,921,145.49
  5. Step 5: Solve for x
    x = 319,921,145.49/20,425.54
  6. Step 6: Final answer
    x = 15,662.80

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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.