Home / 19,214.10-28,824.93-8,120.70

Finding the Fourth Proportional to 19,214.10, 28,824.93 and 8,120.70

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Solution

The fourth proportional to 19,214.10, 28,824.93 and 8,120.70 is: 12,182.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,214.10 : 28,824.93 = 8,120.70 : x
  2. Step 2: Convert to fraction form
    19,214.10/28,824.93 = 8,120.70/x
  3. Step 3: Cross multiply
    19,214.10x = 28,824.93 × 8,120.70
  4. Step 4: Simplify right side
    19,214.10x = 234,078,609.05
  5. Step 5: Solve for x
    x = 234,078,609.05/19,214.10
  6. Step 6: Final answer
    x = 12,182.65

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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.