Home / 12,318.69-16,999.79-6,653.44

Finding the Fourth Proportional to 12,318.69, 16,999.79 and 6,653.44

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Solution

The fourth proportional to 12,318.69, 16,999.79 and 6,653.44 is: 9,181.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,318.69 : 16,999.79 = 6,653.44 : x
  2. Step 2: Convert to fraction form
    12,318.69/16,999.79 = 6,653.44/x
  3. Step 3: Cross multiply
    12,318.69x = 16,999.79 × 6,653.44
  4. Step 4: Simplify right side
    12,318.69x = 113,106,997.78
  5. Step 5: Solve for x
    x = 113,106,997.78/12,318.69
  6. Step 6: Final answer
    x = 9,181.74

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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.