Home / 21,474.38-29,629.91-20,766.44

Finding the Fourth Proportional to 21,474.38, 29,629.91 and 20,766.44

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Solution

The fourth proportional to 21,474.38, 29,629.91 and 20,766.44 is: 28,653.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,474.38 : 29,629.91 = 20,766.44 : x
  2. Step 2: Convert to fraction form
    21,474.38/29,629.91 = 20,766.44/x
  3. Step 3: Cross multiply
    21,474.38x = 29,629.91 × 20,766.44
  4. Step 4: Simplify right side
    21,474.38x = 615,307,496.24
  5. Step 5: Solve for x
    x = 615,307,496.24/21,474.38
  6. Step 6: Final answer
    x = 28,653.10

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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.