Home / 13,725.22-18,941.17-8,345.80

Finding the Fourth Proportional to 13,725.22, 18,941.17 and 8,345.80

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Solution

The fourth proportional to 13,725.22, 18,941.17 and 8,345.80 is: 11,517.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,725.22 : 18,941.17 = 8,345.80 : x
  2. Step 2: Convert to fraction form
    13,725.22/18,941.17 = 8,345.80/x
  3. Step 3: Cross multiply
    13,725.22x = 18,941.17 × 8,345.80
  4. Step 4: Simplify right side
    13,725.22x = 158,079,216.59
  5. Step 5: Solve for x
    x = 158,079,216.59/13,725.22
  6. Step 6: Final answer
    x = 11,517.43

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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.