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Finding the Fourth Proportional to 19,755.94, 29,633.92 and 8,660.12

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Solution

The fourth proportional to 19,755.94, 29,633.92 and 8,660.12 is: 12,990.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,755.94 : 29,633.92 = 8,660.12 : x
  2. Step 2: Convert to fraction form
    19,755.94/29,633.92 = 8,660.12/x
  3. Step 3: Cross multiply
    19,755.94x = 29,633.92 × 8,660.12
  4. Step 4: Simplify right side
    19,755.94x = 256,633,303.27
  5. Step 5: Solve for x
    x = 256,633,303.27/19,755.94
  6. Step 6: Final answer
    x = 12,990.18

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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.