Home / 11,516.30-15,891.86-6,480.74

Finding the Fourth Proportional to 11,516.30, 15,891.86 and 6,480.74

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Solution

The fourth proportional to 11,516.30, 15,891.86 and 6,480.74 is: 8,943.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,516.30 : 15,891.86 = 6,480.74 : x
  2. Step 2: Convert to fraction form
    11,516.30/15,891.86 = 6,480.74/x
  3. Step 3: Cross multiply
    11,516.30x = 15,891.86 × 6,480.74
  4. Step 4: Simplify right side
    11,516.30x = 102,991,012.78
  5. Step 5: Solve for x
    x = 102,991,012.78/11,516.30
  6. Step 6: Final answer
    x = 8,943.06

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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.