Home / 28,628.72-39,507.73-15,882.16

Finding the Fourth Proportional to 28,628.72, 39,507.73 and 15,882.16

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Solution

The fourth proportional to 28,628.72, 39,507.73 and 15,882.16 is: 21,917.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,628.72 : 39,507.73 = 15,882.16 : x
  2. Step 2: Convert to fraction form
    28,628.72/39,507.73 = 15,882.16/x
  3. Step 3: Cross multiply
    28,628.72x = 39,507.73 × 15,882.16
  4. Step 4: Simplify right side
    28,628.72x = 627,467,891.56
  5. Step 5: Solve for x
    x = 627,467,891.56/28,628.72
  6. Step 6: Final answer
    x = 21,917.43

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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.