Home / 12,120.66-16,724.58-6,814.44

Finding the Fourth Proportional to 12,120.66, 16,724.58 and 6,814.44

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Solution

The fourth proportional to 12,120.66, 16,724.58 and 6,814.44 is: 9,402.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,120.66 : 16,724.58 = 6,814.44 : x
  2. Step 2: Convert to fraction form
    12,120.66/16,724.58 = 6,814.44/x
  3. Step 3: Cross multiply
    12,120.66x = 16,724.58 × 6,814.44
  4. Step 4: Simplify right side
    12,120.66x = 113,968,646.94
  5. Step 5: Solve for x
    x = 113,968,646.94/12,120.66
  6. Step 6: Final answer
    x = 9,402.84

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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.