Home / 11,383.47-15,716.43-8,725.86

Finding the Fourth Proportional to 11,383.47, 15,716.43 and 8,725.86

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Solution

The fourth proportional to 11,383.47, 15,716.43 and 8,725.86 is: 12,047.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,383.47 : 15,716.43 = 8,725.86 : x
  2. Step 2: Convert to fraction form
    11,383.47/15,716.43 = 8,725.86/x
  3. Step 3: Cross multiply
    11,383.47x = 15,716.43 × 8,725.86
  4. Step 4: Simplify right side
    11,383.47x = 137,139,367.88
  5. Step 5: Solve for x
    x = 137,139,367.88/11,383.47
  6. Step 6: Final answer
    x = 12,047.24

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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.