Home / 19,213.10-28,823.43-8,119.70

Finding the Fourth Proportional to 19,213.10, 28,823.43 and 8,119.70

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Solution

The fourth proportional to 19,213.10, 28,823.43 and 8,119.70 is: 12,181.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,213.10 : 28,823.43 = 8,119.70 : x
  2. Step 2: Convert to fraction form
    19,213.10/28,823.43 = 8,119.70/x
  3. Step 3: Cross multiply
    19,213.10x = 28,823.43 × 8,119.70
  4. Step 4: Simplify right side
    19,213.10x = 234,037,604.57
  5. Step 5: Solve for x
    x = 234,037,604.57/19,213.10
  6. Step 6: Final answer
    x = 12,181.15

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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.