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Finding the Fourth Proportional to 18,509.00, 25,511.83 and 13,791.56

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Solution

The fourth proportional to 18,509.00, 25,511.83 and 13,791.56 is: 19,009.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,509.00 : 25,511.83 = 13,791.56 : x
  2. Step 2: Convert to fraction form
    18,509.00/25,511.83 = 13,791.56/x
  3. Step 3: Cross multiply
    18,509.00x = 25,511.83 × 13,791.56
  4. Step 4: Simplify right side
    18,509.00x = 351,847,772.12
  5. Step 5: Solve for x
    x = 351,847,772.12/18,509.00
  6. Step 6: Final answer
    x = 19,009.56

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1.5x scale

Why These Related Problems?

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