Home / 19,217.07-28,821.96-8,131.50

Finding the Fourth Proportional to 19,217.07, 28,821.96 and 8,131.50

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Solution

The fourth proportional to 19,217.07, 28,821.96 and 8,131.50 is: 12,195.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,217.07 : 28,821.96 = 8,131.50 : x
  2. Step 2: Convert to fraction form
    19,217.07/28,821.96 = 8,131.50/x
  3. Step 3: Cross multiply
    19,217.07x = 28,821.96 × 8,131.50
  4. Step 4: Simplify right side
    19,217.07x = 234,365,767.74
  5. Step 5: Solve for x
    x = 234,365,767.74/19,217.07
  6. Step 6: Final answer
    x = 12,195.71

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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.