Home / 28,882.97-39,878.09-18,698.57

Finding the Fourth Proportional to 28,882.97, 39,878.09 and 18,698.57

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Solution

The fourth proportional to 28,882.97, 39,878.09 and 18,698.57 is: 25,816.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,882.97 : 39,878.09 = 18,698.57 : x
  2. Step 2: Convert to fraction form
    28,882.97/39,878.09 = 18,698.57/x
  3. Step 3: Cross multiply
    28,882.97x = 39,878.09 × 18,698.57
  4. Step 4: Simplify right side
    28,882.97x = 745,663,257.33
  5. Step 5: Solve for x
    x = 745,663,257.33/28,882.97
  6. Step 6: Final answer
    x = 25,816.71

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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.