Home / 12,245.72-16,899.45-6,940.36

Finding the Fourth Proportional to 12,245.72, 16,899.45 and 6,940.36

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Solution

The fourth proportional to 12,245.72, 16,899.45 and 6,940.36 is: 9,577.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,245.72 : 16,899.45 = 6,940.36 : x
  2. Step 2: Convert to fraction form
    12,245.72/16,899.45 = 6,940.36/x
  3. Step 3: Cross multiply
    12,245.72x = 16,899.45 × 6,940.36
  4. Step 4: Simplify right side
    12,245.72x = 117,288,266.80
  5. Step 5: Solve for x
    x = 117,288,266.80/12,245.72
  6. Step 6: Final answer
    x = 9,577.90

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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.