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Finding the Fourth Proportional to 18,441, 25,448.58 and 10,989

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Solution

The fourth proportional to 18,441, 25,448.58 and 10,989 is: 15,164.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,441 : 25,448.58 = 10,989 : x
  2. Step 2: Convert to fraction form
    18,441/25,448.58 = 10,989/x
  3. Step 3: Cross multiply
    18,441x = 25,448.58 × 10,989
  4. Step 4: Simplify right side
    18,441x = 279,654,445.62
  5. Step 5: Solve for x
    x = 279,654,445.62/18,441
  6. Step 6: Final answer
    x = 15,164.82

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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.