Home / 18,765.56-25,872.98-13,725.72

Finding the Fourth Proportional to 18,765.56, 25,872.98 and 13,725.72

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Solution

The fourth proportional to 18,765.56, 25,872.98 and 13,725.72 is: 18,924.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,765.56 : 25,872.98 = 13,725.72 : x
  2. Step 2: Convert to fraction form
    18,765.56/25,872.98 = 13,725.72/x
  3. Step 3: Cross multiply
    18,765.56x = 25,872.98 × 13,725.72
  4. Step 4: Simplify right side
    18,765.56x = 355,125,279.05
  5. Step 5: Solve for x
    x = 355,125,279.05/18,765.56
  6. Step 6: Final answer
    x = 18,924.31

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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.