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Finding the Fourth Proportional to 11,904.03, 17,856.05 and 3,139.63

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Solution

The fourth proportional to 11,904.03, 17,856.05 and 3,139.63 is: 4,709.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,904.03 : 17,856.05 = 3,139.63 : x
  2. Step 2: Convert to fraction form
    11,904.03/17,856.05 = 3,139.63/x
  3. Step 3: Cross multiply
    11,904.03x = 17,856.05 × 3,139.63
  4. Step 4: Simplify right side
    11,904.03x = 56,061,329.92
  5. Step 5: Solve for x
    x = 56,061,329.92/11,904.03
  6. Step 6: Final answer
    x = 4,709.44

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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.