Home / 12,120.06-16,727.21-6,814.87

Finding the Fourth Proportional to 12,120.06, 16,727.21 and 6,814.87

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Solution

The fourth proportional to 12,120.06, 16,727.21 and 6,814.87 is: 9,405.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,120.06 : 16,727.21 = 6,814.87 : x
  2. Step 2: Convert to fraction form
    12,120.06/16,727.21 = 6,814.87/x
  3. Step 3: Cross multiply
    12,120.06x = 16,727.21 × 6,814.87
  4. Step 4: Simplify right side
    12,120.06x = 113,993,711.28
  5. Step 5: Solve for x
    x = 113,993,711.28/12,120.06
  6. Step 6: Final answer
    x = 9,405.37

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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.