Home / 11,939.90-16,477.08-6,634.58

Finding the Fourth Proportional to 11,939.90, 16,477.08 and 6,634.58

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Solution

The fourth proportional to 11,939.90, 16,477.08 and 6,634.58 is: 9,155.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,939.90 : 16,477.08 = 6,634.58 : x
  2. Step 2: Convert to fraction form
    11,939.90/16,477.08 = 6,634.58/x
  3. Step 3: Cross multiply
    11,939.90x = 16,477.08 × 6,634.58
  4. Step 4: Simplify right side
    11,939.90x = 109,318,505.43
  5. Step 5: Solve for x
    x = 109,318,505.43/11,939.90
  6. Step 6: Final answer
    x = 9,155.73

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1.5x scale

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.