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Finding the Fourth Proportional to 21,459.95, 32,189.94 and 6,668.88

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Solution

The fourth proportional to 21,459.95, 32,189.94 and 6,668.88 is: 10,003.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,459.95 : 32,189.94 = 6,668.88 : x
  2. Step 2: Convert to fraction form
    21,459.95/32,189.94 = 6,668.88/x
  3. Step 3: Cross multiply
    21,459.95x = 32,189.94 × 6,668.88
  4. Step 4: Simplify right side
    21,459.95x = 214,670,847.07
  5. Step 5: Solve for x
    x = 214,670,847.07/21,459.95
  6. Step 6: Final answer
    x = 10,003.33

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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.