Home / 15,106.26-20,846.67-8,391.90

Finding the Fourth Proportional to 15,106.26, 20,846.67 and 8,391.90

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Solution

The fourth proportional to 15,106.26, 20,846.67 and 8,391.90 is: 11,580.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,106.26 : 20,846.67 = 8,391.90 : x
  2. Step 2: Convert to fraction form
    15,106.26/20,846.67 = 8,391.90/x
  3. Step 3: Cross multiply
    15,106.26x = 20,846.67 × 8,391.90
  4. Step 4: Simplify right side
    15,106.26x = 174,943,169.97
  5. Step 5: Solve for x
    x = 174,943,169.97/15,106.26
  6. Step 6: Final answer
    x = 11,580.84

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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.