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Finding the Fourth Proportional to 12,607.33, 18,911 and 3,842.17

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Solution

The fourth proportional to 12,607.33, 18,911 and 3,842.17 is: 5,763.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,607.33 : 18,911 = 3,842.17 : x
  2. Step 2: Convert to fraction form
    12,607.33/18,911 = 3,842.17/x
  3. Step 3: Cross multiply
    12,607.33x = 18,911 × 3,842.17
  4. Step 4: Simplify right side
    12,607.33x = 72,659,276.87
  5. Step 5: Solve for x
    x = 72,659,276.87/12,607.33
  6. Step 6: Final answer
    x = 5,763.26

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Why These Related Problems?

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