Home / 11,116.49-16,660.40-8,321.27

Finding the Fourth Proportional to 11,116.49, 16,660.40 and 8,321.27

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Solution

The fourth proportional to 11,116.49, 16,660.40 and 8,321.27 is: 12,471.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,116.49 : 16,660.40 = 8,321.27 : x
  2. Step 2: Convert to fraction form
    11,116.49/16,660.40 = 8,321.27/x
  3. Step 3: Cross multiply
    11,116.49x = 16,660.40 × 8,321.27
  4. Step 4: Simplify right side
    11,116.49x = 138,635,561.80
  5. Step 5: Solve for x
    x = 138,635,561.80/11,116.49
  6. Step 6: Final answer
    x = 12,471.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.