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Finding the Fourth Proportional to 12,438.33, 17,161.93 and 7,059.58

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Solution

The fourth proportional to 12,438.33, 17,161.93 and 7,059.58 is: 9,740.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,438.33 : 17,161.93 = 7,059.58 : x
  2. Step 2: Convert to fraction form
    12,438.33/17,161.93 = 7,059.58/x
  3. Step 3: Cross multiply
    12,438.33x = 17,161.93 × 7,059.58
  4. Step 4: Simplify right side
    12,438.33x = 121,156,017.79
  5. Step 5: Solve for x
    x = 121,156,017.79/12,438.33
  6. Step 6: Final answer
    x = 9,740.54

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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.