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Finding the Fourth Proportional to 12,596.84, 18,890.48 and 3,709.72

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Solution

The fourth proportional to 12,596.84, 18,890.48 and 3,709.72 is: 5,563.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,596.84 : 18,890.48 = 3,709.72 : x
  2. Step 2: Convert to fraction form
    12,596.84/18,890.48 = 3,709.72/x
  3. Step 3: Cross multiply
    12,596.84x = 18,890.48 × 3,709.72
  4. Step 4: Simplify right side
    12,596.84x = 70,078,391.47
  5. Step 5: Solve for x
    x = 70,078,391.47/12,596.84
  6. Step 6: Final answer
    x = 5,563.17

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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.