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Finding the Fourth Proportional to 19,805.67, 29,687.49 and 9,266.81

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Solution

The fourth proportional to 19,805.67, 29,687.49 and 9,266.81 is: 13,890.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,805.67 : 29,687.49 = 9,266.81 : x
  2. Step 2: Convert to fraction form
    19,805.67/29,687.49 = 9,266.81/x
  3. Step 3: Cross multiply
    19,805.67x = 29,687.49 × 9,266.81
  4. Step 4: Simplify right side
    19,805.67x = 275,108,180.77
  5. Step 5: Solve for x
    x = 275,108,180.77/19,805.67
  6. Step 6: Final answer
    x = 13,890.37

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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.