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Finding the Fourth Proportional to 18,288.25, 25,238.87 and 10,330.27

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Solution

The fourth proportional to 18,288.25, 25,238.87 and 10,330.27 is: 14,256.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,288.25 : 25,238.87 = 10,330.27 : x
  2. Step 2: Convert to fraction form
    18,288.25/25,238.87 = 10,330.27/x
  3. Step 3: Cross multiply
    18,288.25x = 25,238.87 × 10,330.27
  4. Step 4: Simplify right side
    18,288.25x = 260,724,341.59
  5. Step 5: Solve for x
    x = 260,724,341.59/18,288.25
  6. Step 6: Final answer
    x = 14,256.39

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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.