Home / 11,968.84-16,499.85-8,421.04

Finding the Fourth Proportional to 11,968.84, 16,499.85 and 8,421.04

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Solution

The fourth proportional to 11,968.84, 16,499.85 and 8,421.04 is: 11,608.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,968.84 : 16,499.85 = 8,421.04 : x
  2. Step 2: Convert to fraction form
    11,968.84/16,499.85 = 8,421.04/x
  3. Step 3: Cross multiply
    11,968.84x = 16,499.85 × 8,421.04
  4. Step 4: Simplify right side
    11,968.84x = 138,945,896.84
  5. Step 5: Solve for x
    x = 138,945,896.84/11,968.84
  6. Step 6: Final answer
    x = 11,608.97

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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.