Home / 20,632.84-30,919.02-12,817.96

Finding the Fourth Proportional to 20,632.84, 30,919.02 and 12,817.96

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Solution

The fourth proportional to 20,632.84, 30,919.02 and 12,817.96 is: 19,208.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,632.84 : 30,919.02 = 12,817.96 : x
  2. Step 2: Convert to fraction form
    20,632.84/30,919.02 = 12,817.96/x
  3. Step 3: Cross multiply
    20,632.84x = 30,919.02 × 12,817.96
  4. Step 4: Simplify right side
    20,632.84x = 396,318,761.60
  5. Step 5: Solve for x
    x = 396,318,761.60/20,632.84
  6. Step 6: Final answer
    x = 19,208.15

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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.