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Finding the Fourth Proportional to 15,306.03, 21,127.64 and 9,018

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Solution

The fourth proportional to 15,306.03, 21,127.64 and 9,018 is: 12,447.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,306.03 : 21,127.64 = 9,018 : x
  2. Step 2: Convert to fraction form
    15,306.03/21,127.64 = 9,018/x
  3. Step 3: Cross multiply
    15,306.03x = 21,127.64 × 9,018
  4. Step 4: Simplify right side
    15,306.03x = 190,529,012.43
  5. Step 5: Solve for x
    x = 190,529,012.43/15,306.03
  6. Step 6: Final answer
    x = 12,447.97

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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.