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Finding the Fourth Proportional to 18,876.35, 26,047.23 and 10,921.07

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Solution

The fourth proportional to 18,876.35, 26,047.23 and 10,921.07 is: 15,069.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,876.35 : 26,047.23 = 10,921.07 : x
  2. Step 2: Convert to fraction form
    18,876.35/26,047.23 = 10,921.07/x
  3. Step 3: Cross multiply
    18,876.35x = 26,047.23 × 10,921.07
  4. Step 4: Simplify right side
    18,876.35x = 284,463,622.14
  5. Step 5: Solve for x
    x = 284,463,622.14/18,876.35
  6. Step 6: Final answer
    x = 15,069.84

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.