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Finding the Fourth Proportional to 21,999.20, 32,950.20 and 8,844.80

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Solution

The fourth proportional to 21,999.20, 32,950.20 and 8,844.80 is: 13,247.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,999.20 : 32,950.20 = 8,844.80 : x
  2. Step 2: Convert to fraction form
    21,999.20/32,950.20 = 8,844.80/x
  3. Step 3: Cross multiply
    21,999.20x = 32,950.20 × 8,844.80
  4. Step 4: Simplify right side
    21,999.20x = 291,437,928.96
  5. Step 5: Solve for x
    x = 291,437,928.96/21,999.20
  6. Step 6: Final answer
    x = 13,247.66

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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.