Home / 20,794.61-28,693.90-11,840.87

Finding the Fourth Proportional to 20,794.61, 28,693.90 and 11,840.87

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Solution

The fourth proportional to 20,794.61, 28,693.90 and 11,840.87 is: 16,338.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,794.61 : 28,693.90 = 11,840.87 : x
  2. Step 2: Convert to fraction form
    20,794.61/28,693.90 = 11,840.87/x
  3. Step 3: Cross multiply
    20,794.61x = 28,693.90 × 11,840.87
  4. Step 4: Simplify right side
    20,794.61x = 339,760,739.69
  5. Step 5: Solve for x
    x = 339,760,739.69/20,794.61
  6. Step 6: Final answer
    x = 16,338.88

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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.