Home / 13,311.41-19,931.85-8,039.39

Finding the Fourth Proportional to 13,311.41, 19,931.85 and 8,039.39

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Solution

The fourth proportional to 13,311.41, 19,931.85 and 8,039.39 is: 12,037.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,311.41 : 19,931.85 = 8,039.39 : x
  2. Step 2: Convert to fraction form
    13,311.41/19,931.85 = 8,039.39/x
  3. Step 3: Cross multiply
    13,311.41x = 19,931.85 × 8,039.39
  4. Step 4: Simplify right side
    13,311.41x = 160,239,815.91
  5. Step 5: Solve for x
    x = 160,239,815.91/13,311.41
  6. Step 6: Final answer
    x = 12,037.78

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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.