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Finding the Fourth Proportional to 10,396.38, 15,570.18 and 9,021

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Solution

The fourth proportional to 10,396.38, 15,570.18 and 9,021 is: 13,510.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,396.38 : 15,570.18 = 9,021 : x
  2. Step 2: Convert to fraction form
    10,396.38/15,570.18 = 9,021/x
  3. Step 3: Cross multiply
    10,396.38x = 15,570.18 × 9,021
  4. Step 4: Simplify right side
    10,396.38x = 140,458,593.78
  5. Step 5: Solve for x
    x = 140,458,593.78/10,396.38
  6. Step 6: Final answer
    x = 13,510.34

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.