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Finding the Fourth Proportional to 19,793.84, 29,685.29 and 7,947.59

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Solution

The fourth proportional to 19,793.84, 29,685.29 and 7,947.59 is: 11,919.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,793.84 : 29,685.29 = 7,947.59 : x
  2. Step 2: Convert to fraction form
    19,793.84/29,685.29 = 7,947.59/x
  3. Step 3: Cross multiply
    19,793.84x = 29,685.29 × 7,947.59
  4. Step 4: Simplify right side
    19,793.84x = 235,926,325.79
  5. Step 5: Solve for x
    x = 235,926,325.79/19,793.84
  6. Step 6: Final answer
    x = 11,919.18

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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.