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Finding the Fourth Proportional to 19,759.81, 29,639.74 and 8,073.03

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Solution

The fourth proportional to 19,759.81, 29,639.74 and 8,073.03 is: 12,109.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,759.81 : 29,639.74 = 8,073.03 : x
  2. Step 2: Convert to fraction form
    19,759.81/29,639.74 = 8,073.03/x
  3. Step 3: Cross multiply
    19,759.81x = 29,639.74 × 8,073.03
  4. Step 4: Simplify right side
    19,759.81x = 239,282,510.21
  5. Step 5: Solve for x
    x = 239,282,510.21/19,759.81
  6. Step 6: Final answer
    x = 12,109.56

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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.