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Finding the Fourth Proportional to 18,356.44, 25,330.62 and 10,903

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Solution

The fourth proportional to 18,356.44, 25,330.62 and 10,903 is: 15,045.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,356.44 : 25,330.62 = 10,903 : x
  2. Step 2: Convert to fraction form
    18,356.44/25,330.62 = 10,903/x
  3. Step 3: Cross multiply
    18,356.44x = 25,330.62 × 10,903
  4. Step 4: Simplify right side
    18,356.44x = 276,179,749.86
  5. Step 5: Solve for x
    x = 276,179,749.86/18,356.44
  6. Step 6: Final answer
    x = 15,045.39

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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.