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Finding the Fourth Proportional to 15,647.25, 21,593.21 and 9,361.11

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Solution

The fourth proportional to 15,647.25, 21,593.21 and 9,361.11 is: 12,918.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,647.25 : 21,593.21 = 9,361.11 : x
  2. Step 2: Convert to fraction form
    15,647.25/21,593.21 = 9,361.11/x
  3. Step 3: Cross multiply
    15,647.25x = 21,593.21 × 9,361.11
  4. Step 4: Simplify right side
    15,647.25x = 202,136,414.06
  5. Step 5: Solve for x
    x = 202,136,414.06/15,647.25
  6. Step 6: Final answer
    x = 12,918.33

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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.