Home / 28,631.97-39,512.07-15,887.09

Finding the Fourth Proportional to 28,631.97, 39,512.07 and 15,887.09

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Solution

The fourth proportional to 28,631.97, 39,512.07 and 15,887.09 is: 21,924.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,631.97 : 39,512.07 = 15,887.09 : x
  2. Step 2: Convert to fraction form
    28,631.97/39,512.07 = 15,887.09/x
  3. Step 3: Cross multiply
    28,631.97x = 39,512.07 × 15,887.09
  4. Step 4: Simplify right side
    28,631.97x = 627,731,614.62
  5. Step 5: Solve for x
    x = 627,731,614.62/28,631.97
  6. Step 6: Final answer
    x = 21,924.15

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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.