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Finding the Fourth Proportional to 21,893.34, 30,226.68 and 15,176.52

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Solution

The fourth proportional to 21,893.34, 30,226.68 and 15,176.52 is: 20,953.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,893.34 : 30,226.68 = 15,176.52 : x
  2. Step 2: Convert to fraction form
    21,893.34/30,226.68 = 15,176.52/x
  3. Step 3: Cross multiply
    21,893.34x = 30,226.68 × 15,176.52
  4. Step 4: Simplify right side
    21,893.34x = 458,735,813.55
  5. Step 5: Solve for x
    x = 458,735,813.55/21,893.34
  6. Step 6: Final answer
    x = 20,953.21

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.