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Finding the Fourth Proportional to 21,341.85, 29,453.39 and 11,783.58

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Solution

The fourth proportional to 21,341.85, 29,453.39 and 11,783.58 is: 16,262.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,341.85 : 29,453.39 = 11,783.58 : x
  2. Step 2: Convert to fraction form
    21,341.85/29,453.39 = 11,783.58/x
  3. Step 3: Cross multiply
    21,341.85x = 29,453.39 × 11,783.58
  4. Step 4: Simplify right side
    21,341.85x = 347,066,318.42
  5. Step 5: Solve for x
    x = 347,066,318.42/21,341.85
  6. Step 6: Final answer
    x = 16,262.24

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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.