Home / 13,725.14-20,487.27-11,789.78

Finding the Fourth Proportional to 13,725.14, 20,487.27 and 11,789.78

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Solution

The fourth proportional to 13,725.14, 20,487.27 and 11,789.78 is: 17,598.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,725.14 : 20,487.27 = 11,789.78 : x
  2. Step 2: Convert to fraction form
    13,725.14/20,487.27 = 11,789.78/x
  3. Step 3: Cross multiply
    13,725.14x = 20,487.27 × 11,789.78
  4. Step 4: Simplify right side
    13,725.14x = 241,540,347.15
  5. Step 5: Solve for x
    x = 241,540,347.15/13,725.14
  6. Step 6: Final answer
    x = 17,598.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.