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Finding the Fourth Proportional to 20,593.74, 30,903.57 and 12,817.74

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Solution

The fourth proportional to 20,593.74, 30,903.57 and 12,817.74 is: 19,234.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,593.74 : 30,903.57 = 12,817.74 : x
  2. Step 2: Convert to fraction form
    20,593.74/30,903.57 = 12,817.74/x
  3. Step 3: Cross multiply
    20,593.74x = 30,903.57 × 12,817.74
  4. Step 4: Simplify right side
    20,593.74x = 396,113,925.33
  5. Step 5: Solve for x
    x = 396,113,925.33/20,593.74
  6. Step 6: Final answer
    x = 19,234.68

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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.