Home / 28,629.10-39,507.42-15,882.21

Finding the Fourth Proportional to 28,629.10, 39,507.42 and 15,882.21

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Solution

The fourth proportional to 28,629.10, 39,507.42 and 15,882.21 is: 21,917.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,629.10 : 39,507.42 = 15,882.21 : x
  2. Step 2: Convert to fraction form
    28,629.10/39,507.42 = 15,882.21/x
  3. Step 3: Cross multiply
    28,629.10x = 39,507.42 × 15,882.21
  4. Step 4: Simplify right side
    28,629.10x = 627,465,322.56
  5. Step 5: Solve for x
    x = 627,465,322.56/28,629.10
  6. Step 6: Final answer
    x = 21,917.05

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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.