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Finding the Fourth Proportional to 18,351, 25,326.54 and 10,899

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Solution

The fourth proportional to 18,351, 25,326.54 and 10,899 is: 15,041.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,351 : 25,326.54 = 10,899 : x
  2. Step 2: Convert to fraction form
    18,351/25,326.54 = 10,899/x
  3. Step 3: Cross multiply
    18,351x = 25,326.54 × 10,899
  4. Step 4: Simplify right side
    18,351x = 276,033,959.46
  5. Step 5: Solve for x
    x = 276,033,959.46/18,351
  6. Step 6: Final answer
    x = 15,041.90

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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.