Home / 21,965.06-32,939.31-7,921.34

Finding the Fourth Proportional to 21,965.06, 32,939.31 and 7,921.34

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Solution

The fourth proportional to 21,965.06, 32,939.31 and 7,921.34 is: 11,879.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,965.06 : 32,939.31 = 7,921.34 : x
  2. Step 2: Convert to fraction form
    21,965.06/32,939.31 = 7,921.34/x
  3. Step 3: Cross multiply
    21,965.06x = 32,939.31 × 7,921.34
  4. Step 4: Simplify right side
    21,965.06x = 260,923,473.88
  5. Step 5: Solve for x
    x = 260,923,473.88/21,965.06
  6. Step 6: Final answer
    x = 11,879.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.