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Finding the Fourth Proportional to 19,859.38, 29,782.46 and 8,010.09

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Solution

The fourth proportional to 19,859.38, 29,782.46 and 8,010.09 is: 12,012.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,859.38 : 29,782.46 = 8,010.09 : x
  2. Step 2: Convert to fraction form
    19,859.38/29,782.46 = 8,010.09/x
  3. Step 3: Cross multiply
    19,859.38x = 29,782.46 × 8,010.09
  4. Step 4: Simplify right side
    19,859.38x = 238,560,232.49
  5. Step 5: Solve for x
    x = 238,560,232.49/19,859.38
  6. Step 6: Final answer
    x = 12,012.47

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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.