Home / 20,775.68-28,629.24-14,796.80

Finding the Fourth Proportional to 20,775.68, 28,629.24 and 14,796.80

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Solution

The fourth proportional to 20,775.68, 28,629.24 and 14,796.80 is: 20,390.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,775.68 : 28,629.24 = 14,796.80 : x
  2. Step 2: Convert to fraction form
    20,775.68/28,629.24 = 14,796.80/x
  3. Step 3: Cross multiply
    20,775.68x = 28,629.24 × 14,796.80
  4. Step 4: Simplify right side
    20,775.68x = 423,621,138.43
  5. Step 5: Solve for x
    x = 423,621,138.43/20,775.68
  6. Step 6: Final answer
    x = 20,390.24

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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.