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Finding the Fourth Proportional to 19,993.74, 30,008.81 and 10,641.61

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Solution

The fourth proportional to 19,993.74, 30,008.81 and 10,641.61 is: 15,972.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,993.74 : 30,008.81 = 10,641.61 : x
  2. Step 2: Convert to fraction form
    19,993.74/30,008.81 = 10,641.61/x
  3. Step 3: Cross multiply
    19,993.74x = 30,008.81 × 10,641.61
  4. Step 4: Simplify right side
    19,993.74x = 319,342,052.58
  5. Step 5: Solve for x
    x = 319,342,052.58/19,993.74
  6. Step 6: Final answer
    x = 15,972.10

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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.