Home / 12,116.09-16,720.11-6,738.57

Finding the Fourth Proportional to 12,116.09, 16,720.11 and 6,738.57

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Solution

The fourth proportional to 12,116.09, 16,720.11 and 6,738.57 is: 9,299.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,116.09 : 16,720.11 = 6,738.57 : x
  2. Step 2: Convert to fraction form
    12,116.09/16,720.11 = 6,738.57/x
  3. Step 3: Cross multiply
    12,116.09x = 16,720.11 × 6,738.57
  4. Step 4: Simplify right side
    12,116.09x = 112,669,635.70
  5. Step 5: Solve for x
    x = 112,669,635.70/12,116.09
  6. Step 6: Final answer
    x = 9,299.18

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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.