Home / 36,921.79-50,951.41-21,005.90

Finding the Fourth Proportional to 36,921.79, 50,951.41 and 21,005.90

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Solution

The fourth proportional to 36,921.79, 50,951.41 and 21,005.90 is: 28,987.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,921.79 : 50,951.41 = 21,005.90 : x
  2. Step 2: Convert to fraction form
    36,921.79/50,951.41 = 21,005.90/x
  3. Step 3: Cross multiply
    36,921.79x = 50,951.41 × 21,005.90
  4. Step 4: Simplify right side
    36,921.79x = 1,070,279,968.56
  5. Step 5: Solve for x
    x = 1,070,279,968.56/36,921.79
  6. Step 6: Final answer
    x = 28,987.76

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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.