Home / 28,939.35-39,940.92-17,005.62

Finding the Fourth Proportional to 28,939.35, 39,940.92 and 17,005.62

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Solution

The fourth proportional to 28,939.35, 39,940.92 and 17,005.62 is: 23,470.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,939.35 : 39,940.92 = 17,005.62 : x
  2. Step 2: Convert to fraction form
    28,939.35/39,940.92 = 17,005.62/x
  3. Step 3: Cross multiply
    28,939.35x = 39,940.92 × 17,005.62
  4. Step 4: Simplify right side
    28,939.35x = 679,220,107.97
  5. Step 5: Solve for x
    x = 679,220,107.97/28,939.35
  6. Step 6: Final answer
    x = 23,470.47

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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.