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Finding the Fourth Proportional to 11,361.25, 15,678.53 and 6,646.44

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Solution

The fourth proportional to 11,361.25, 15,678.53 and 6,646.44 is: 9,172.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,361.25 : 15,678.53 = 6,646.44 : x
  2. Step 2: Convert to fraction form
    11,361.25/15,678.53 = 6,646.44/x
  3. Step 3: Cross multiply
    11,361.25x = 15,678.53 × 6,646.44
  4. Step 4: Simplify right side
    11,361.25x = 104,206,408.93
  5. Step 5: Solve for x
    x = 104,206,408.93/11,361.25
  6. Step 6: Final answer
    x = 9,172.09

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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.