Home / 28,629.41-39,508.68-15,882.84

Finding the Fourth Proportional to 28,629.41, 39,508.68 and 15,882.84

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Solution

The fourth proportional to 28,629.41, 39,508.68 and 15,882.84 is: 21,918.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,629.41 : 39,508.68 = 15,882.84 : x
  2. Step 2: Convert to fraction form
    28,629.41/39,508.68 = 15,882.84/x
  3. Step 3: Cross multiply
    28,629.41x = 39,508.68 × 15,882.84
  4. Step 4: Simplify right side
    28,629.41x = 627,510,043.05
  5. Step 5: Solve for x
    x = 627,510,043.05/28,629.41
  6. Step 6: Final answer
    x = 21,918.38

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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.