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Finding the Fourth Proportional to 18,770.34, 25,902.32 and 10,812.82

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Solution

The fourth proportional to 18,770.34, 25,902.32 and 10,812.82 is: 14,921.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,770.34 : 25,902.32 = 10,812.82 : x
  2. Step 2: Convert to fraction form
    18,770.34/25,902.32 = 10,812.82/x
  3. Step 3: Cross multiply
    18,770.34x = 25,902.32 × 10,812.82
  4. Step 4: Simplify right side
    18,770.34x = 280,077,123.74
  5. Step 5: Solve for x
    x = 280,077,123.74/18,770.34
  6. Step 6: Final answer
    x = 14,921.26

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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.