Home / 20,141.31-27,798.33-16,778.79

Finding the Fourth Proportional to 20,141.31, 27,798.33 and 16,778.79

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Solution

The fourth proportional to 20,141.31, 27,798.33 and 16,778.79 is: 23,157.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,141.31 : 27,798.33 = 16,778.79 : x
  2. Step 2: Convert to fraction form
    20,141.31/27,798.33 = 16,778.79/x
  3. Step 3: Cross multiply
    20,141.31x = 27,798.33 × 16,778.79
  4. Step 4: Simplify right side
    20,141.31x = 466,422,410.92
  5. Step 5: Solve for x
    x = 466,422,410.92/20,141.31
  6. Step 6: Final answer
    x = 23,157.51

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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.