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Finding the Fourth Proportional to 17,620.70, 26,380.28 and 11,703.50

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Solution

The fourth proportional to 17,620.70, 26,380.28 and 11,703.50 is: 17,521.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,620.70 : 26,380.28 = 11,703.50 : x
  2. Step 2: Convert to fraction form
    17,620.70/26,380.28 = 11,703.50/x
  3. Step 3: Cross multiply
    17,620.70x = 26,380.28 × 11,703.50
  4. Step 4: Simplify right side
    17,620.70x = 308,741,606.98
  5. Step 5: Solve for x
    x = 308,741,606.98/17,620.70
  6. Step 6: Final answer
    x = 17,521.53

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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.