Home / 15,194.37-20,921.45-12,951.21

Finding the Fourth Proportional to 15,194.37, 20,921.45 and 12,951.21

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Solution

The fourth proportional to 15,194.37, 20,921.45 and 12,951.21 is: 17,832.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,194.37 : 20,921.45 = 12,951.21 : x
  2. Step 2: Convert to fraction form
    15,194.37/20,921.45 = 12,951.21/x
  3. Step 3: Cross multiply
    15,194.37x = 20,921.45 × 12,951.21
  4. Step 4: Simplify right side
    15,194.37x = 270,958,027.70
  5. Step 5: Solve for x
    x = 270,958,027.70/15,194.37
  6. Step 6: Final answer
    x = 17,832.79

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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.