Home / 11,939.64-16,477.20-6,634.50

Finding the Fourth Proportional to 11,939.64, 16,477.20 and 6,634.50

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Solution

The fourth proportional to 11,939.64, 16,477.20 and 6,634.50 is: 9,155.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,939.64 : 16,477.20 = 6,634.50 : x
  2. Step 2: Convert to fraction form
    11,939.64/16,477.20 = 6,634.50/x
  3. Step 3: Cross multiply
    11,939.64x = 16,477.20 × 6,634.50
  4. Step 4: Simplify right side
    11,939.64x = 109,317,983.40
  5. Step 5: Solve for x
    x = 109,317,983.40/11,939.64
  6. Step 6: Final answer
    x = 9,155.89

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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.