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Finding the Fourth Proportional to 18,468, 25,486.56 and 11,020.32

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Solution

The fourth proportional to 18,468, 25,486.56 and 11,020.32 is: 15,208.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,468 : 25,486.56 = 11,020.32 : x
  2. Step 2: Convert to fraction form
    18,468/25,486.56 = 11,020.32/x
  3. Step 3: Cross multiply
    18,468x = 25,486.56 × 11,020.32
  4. Step 4: Simplify right side
    18,468x = 280,870,046.90
  5. Step 5: Solve for x
    x = 280,870,046.90/18,468
  6. Step 6: Final answer
    x = 15,208.47

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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.