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Finding the Fourth Proportional to 21,669.68, 32,502.90 and 7,818.68

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Solution

The fourth proportional to 21,669.68, 32,502.90 and 7,818.68 is: 11,727.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,669.68 : 32,502.90 = 7,818.68 : x
  2. Step 2: Convert to fraction form
    21,669.68/32,502.90 = 7,818.68/x
  3. Step 3: Cross multiply
    21,669.68x = 32,502.90 × 7,818.68
  4. Step 4: Simplify right side
    21,669.68x = 254,129,884.75
  5. Step 5: Solve for x
    x = 254,129,884.75/21,669.68
  6. Step 6: Final answer
    x = 11,727.44

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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.