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Finding the Fourth Proportional to 11,761.91, 16,230.63 and 6,457.07

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Solution

The fourth proportional to 11,761.91, 16,230.63 and 6,457.07 is: 8,910.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,761.91 : 16,230.63 = 6,457.07 : x
  2. Step 2: Convert to fraction form
    11,761.91/16,230.63 = 6,457.07/x
  3. Step 3: Cross multiply
    11,761.91x = 16,230.63 × 6,457.07
  4. Step 4: Simplify right side
    11,761.91x = 104,802,251.23
  5. Step 5: Solve for x
    x = 104,802,251.23/11,761.91
  6. Step 6: Final answer
    x = 8,910.31

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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.