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Finding the Fourth Proportional to 21,777.26, 32,662.04 and 9,928.38

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Solution

The fourth proportional to 21,777.26, 32,662.04 and 9,928.38 is: 14,890.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,777.26 : 32,662.04 = 9,928.38 : x
  2. Step 2: Convert to fraction form
    21,777.26/32,662.04 = 9,928.38/x
  3. Step 3: Cross multiply
    21,777.26x = 32,662.04 × 9,928.38
  4. Step 4: Simplify right side
    21,777.26x = 324,281,144.70
  5. Step 5: Solve for x
    x = 324,281,144.70/21,777.26
  6. Step 6: Final answer
    x = 14,890.81

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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.