Home / 12,276.91-16,942.14-6,687.91

Finding the Fourth Proportional to 12,276.91, 16,942.14 and 6,687.91

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Solution

The fourth proportional to 12,276.91, 16,942.14 and 6,687.91 is: 9,229.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,276.91 : 16,942.14 = 6,687.91 : x
  2. Step 2: Convert to fraction form
    12,276.91/16,942.14 = 6,687.91/x
  3. Step 3: Cross multiply
    12,276.91x = 16,942.14 × 6,687.91
  4. Step 4: Simplify right side
    12,276.91x = 113,307,507.53
  5. Step 5: Solve for x
    x = 113,307,507.53/12,276.91
  6. Step 6: Final answer
    x = 9,229.32

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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.