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Finding the Fourth Proportional to 21,808.50, 32,716.98 and 7,017.63

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Solution

The fourth proportional to 21,808.50, 32,716.98 and 7,017.63 is: 10,527.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,808.50 : 32,716.98 = 7,017.63 : x
  2. Step 2: Convert to fraction form
    21,808.50/32,716.98 = 7,017.63/x
  3. Step 3: Cross multiply
    21,808.50x = 32,716.98 × 7,017.63
  4. Step 4: Simplify right side
    21,808.50x = 229,595,660.36
  5. Step 5: Solve for x
    x = 229,595,660.36/21,808.50
  6. Step 6: Final answer
    x = 10,527.81

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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.