Home / 13,725.15-18,933.39-8,349.23

Finding the Fourth Proportional to 13,725.15, 18,933.39 and 8,349.23

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Solution

The fourth proportional to 13,725.15, 18,933.39 and 8,349.23 is: 11,517.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,725.15 : 18,933.39 = 8,349.23 : x
  2. Step 2: Convert to fraction form
    13,725.15/18,933.39 = 8,349.23/x
  3. Step 3: Cross multiply
    13,725.15x = 18,933.39 × 8,349.23
  4. Step 4: Simplify right side
    13,725.15x = 158,079,275.12
  5. Step 5: Solve for x
    x = 158,079,275.12/13,725.15
  6. Step 6: Final answer
    x = 11,517.49

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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.