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Finding the Fourth Proportional to 20,038.73, 30,060.81 and 8,349.21

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Solution

The fourth proportional to 20,038.73, 30,060.81 and 8,349.21 is: 12,524.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,038.73 : 30,060.81 = 8,349.21 : x
  2. Step 2: Convert to fraction form
    20,038.73/30,060.81 = 8,349.21/x
  3. Step 3: Cross multiply
    20,038.73x = 30,060.81 × 8,349.21
  4. Step 4: Simplify right side
    20,038.73x = 250,984,015.46
  5. Step 5: Solve for x
    x = 250,984,015.46/20,038.73
  6. Step 6: Final answer
    x = 12,524.95

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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.