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Finding the Fourth Proportional to 10,879.72, 14,995.74 and 8,326.60

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Solution

The fourth proportional to 10,879.72, 14,995.74 and 8,326.60 is: 11,476.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,879.72 : 14,995.74 = 8,326.60 : x
  2. Step 2: Convert to fraction form
    10,879.72/14,995.74 = 8,326.60/x
  3. Step 3: Cross multiply
    10,879.72x = 14,995.74 × 8,326.60
  4. Step 4: Simplify right side
    10,879.72x = 124,863,528.68
  5. Step 5: Solve for x
    x = 124,863,528.68/10,879.72
  6. Step 6: Final answer
    x = 11,476.72

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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.