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Finding the Fourth Proportional to 21,993.42, 32,970.60 and 11,441.28

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Solution

The fourth proportional to 21,993.42, 32,970.60 and 11,441.28 is: 17,151.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,993.42 : 32,970.60 = 11,441.28 : x
  2. Step 2: Convert to fraction form
    21,993.42/32,970.60 = 11,441.28/x
  3. Step 3: Cross multiply
    21,993.42x = 32,970.60 × 11,441.28
  4. Step 4: Simplify right side
    21,993.42x = 377,225,866.37
  5. Step 5: Solve for x
    x = 377,225,866.37/21,993.42
  6. Step 6: Final answer
    x = 17,151.76

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