Home / 11,805.21-16,290.99-6,499.98

Finding the Fourth Proportional to 11,805.21, 16,290.99 and 6,499.98

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Solution

The fourth proportional to 11,805.21, 16,290.99 and 6,499.98 is: 8,969.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,805.21 : 16,290.99 = 6,499.98 : x
  2. Step 2: Convert to fraction form
    11,805.21/16,290.99 = 6,499.98/x
  3. Step 3: Cross multiply
    11,805.21x = 16,290.99 × 6,499.98
  4. Step 4: Simplify right side
    11,805.21x = 105,891,109.18
  5. Step 5: Solve for x
    x = 105,891,109.18/11,805.21
  6. Step 6: Final answer
    x = 8,969.86

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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.