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Finding the Fourth Proportional to 17,611.94, 26,393.25 and 12,658.34

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Solution

The fourth proportional to 17,611.94, 26,393.25 and 12,658.34 is: 18,969.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,611.94 : 26,393.25 = 12,658.34 : x
  2. Step 2: Convert to fraction form
    17,611.94/26,393.25 = 12,658.34/x
  3. Step 3: Cross multiply
    17,611.94x = 26,393.25 × 12,658.34
  4. Step 4: Simplify right side
    17,611.94x = 334,094,732.21
  5. Step 5: Solve for x
    x = 334,094,732.21/17,611.94
  6. Step 6: Final answer
    x = 18,969.79

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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.