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Finding the Fourth Proportional to 19,809.11, 29,693.39 and 8,713.73

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Solution

The fourth proportional to 19,809.11, 29,693.39 and 8,713.73 is: 13,061.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,809.11 : 29,693.39 = 8,713.73 : x
  2. Step 2: Convert to fraction form
    19,809.11/29,693.39 = 8,713.73/x
  3. Step 3: Cross multiply
    19,809.11x = 29,693.39 × 8,713.73
  4. Step 4: Simplify right side
    19,809.11x = 258,740,046.88
  5. Step 5: Solve for x
    x = 258,740,046.88/19,809.11
  6. Step 6: Final answer
    x = 13,061.67

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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.