Home / 11,811.29-16,297.20-8,977.91

Finding the Fourth Proportional to 11,811.29, 16,297.20 and 8,977.91

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Solution

The fourth proportional to 11,811.29, 16,297.20 and 8,977.91 is: 12,387.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,811.29 : 16,297.20 = 8,977.91 : x
  2. Step 2: Convert to fraction form
    11,811.29/16,297.20 = 8,977.91/x
  3. Step 3: Cross multiply
    11,811.29x = 16,297.20 × 8,977.91
  4. Step 4: Simplify right side
    11,811.29x = 146,314,713.37
  5. Step 5: Solve for x
    x = 146,314,713.37/11,811.29
  6. Step 6: Final answer
    x = 12,387.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.