Home / 12,087.78-16,682.79-6,782.91

Finding the Fourth Proportional to 12,087.78, 16,682.79 and 6,782.91

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Solution

The fourth proportional to 12,087.78, 16,682.79 and 6,782.91 is: 9,361.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,087.78 : 16,682.79 = 6,782.91 : x
  2. Step 2: Convert to fraction form
    12,087.78/16,682.79 = 6,782.91/x
  3. Step 3: Cross multiply
    12,087.78x = 16,682.79 × 6,782.91
  4. Step 4: Simplify right side
    12,087.78x = 113,157,863.12
  5. Step 5: Solve for x
    x = 113,157,863.12/12,087.78
  6. Step 6: Final answer
    x = 9,361.34

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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.