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Finding the Fourth Proportional to 11,903.81, 17,856.15 and 4,508.81

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Solution

The fourth proportional to 11,903.81, 17,856.15 and 4,508.81 is: 6,763.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,903.81 : 17,856.15 = 4,508.81 : x
  2. Step 2: Convert to fraction form
    11,903.81/17,856.15 = 4,508.81/x
  3. Step 3: Cross multiply
    11,903.81x = 17,856.15 × 4,508.81
  4. Step 4: Simplify right side
    11,903.81x = 80,510,048.89
  5. Step 5: Solve for x
    x = 80,510,048.89/11,903.81
  6. Step 6: Final answer
    x = 6,763.38

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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.