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Finding the Fourth Proportional to 21,811.44, 32,718.30 and 7,019.22

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Solution

The fourth proportional to 21,811.44, 32,718.30 and 7,019.22 is: 10,529.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,811.44 : 32,718.30 = 7,019.22 : x
  2. Step 2: Convert to fraction form
    21,811.44/32,718.30 = 7,019.22/x
  3. Step 3: Cross multiply
    21,811.44x = 32,718.30 × 7,019.22
  4. Step 4: Simplify right side
    21,811.44x = 229,656,945.73
  5. Step 5: Solve for x
    x = 229,656,945.73/21,811.44
  6. Step 6: Final answer
    x = 10,529.20

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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.