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Finding the Fourth Proportional to 21,201.84, 31,813.80 and 10,673.52

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Solution

The fourth proportional to 21,201.84, 31,813.80 and 10,673.52 is: 16,015.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,201.84 : 31,813.80 = 10,673.52 : x
  2. Step 2: Convert to fraction form
    21,201.84/31,813.80 = 10,673.52/x
  3. Step 3: Cross multiply
    21,201.84x = 31,813.80 × 10,673.52
  4. Step 4: Simplify right side
    21,201.84x = 339,565,230.58
  5. Step 5: Solve for x
    x = 339,565,230.58/21,201.84
  6. Step 6: Final answer
    x = 16,015.84

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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.