Home / 15,078.78-22,619.93-5,725.80

Finding the Fourth Proportional to 15,078.78, 22,619.93 and 5,725.80

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Solution

The fourth proportional to 15,078.78, 22,619.93 and 5,725.80 is: 8,589.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,078.78 : 22,619.93 = 5,725.80 : x
  2. Step 2: Convert to fraction form
    15,078.78/22,619.93 = 5,725.80/x
  3. Step 3: Cross multiply
    15,078.78x = 22,619.93 × 5,725.80
  4. Step 4: Simplify right side
    15,078.78x = 129,517,166.57
  5. Step 5: Solve for x
    x = 129,517,166.57/15,078.78
  6. Step 6: Final answer
    x = 8,589.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.