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Finding the Fourth Proportional to 18,887.12, 26,059.56 and 11,810

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Solution

The fourth proportional to 18,887.12, 26,059.56 and 11,810 is: 16,294.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,887.12 : 26,059.56 = 11,810 : x
  2. Step 2: Convert to fraction form
    18,887.12/26,059.56 = 11,810/x
  3. Step 3: Cross multiply
    18,887.12x = 26,059.56 × 11,810
  4. Step 4: Simplify right side
    18,887.12x = 307,763,403.60
  5. Step 5: Solve for x
    x = 307,763,403.60/18,887.12
  6. Step 6: Final answer
    x = 16,294.88

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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.