Home / 19,212.12-28,818.81-8,119.17

Finding the Fourth Proportional to 19,212.12, 28,818.81 and 8,119.17

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Solution

The fourth proportional to 19,212.12, 28,818.81 and 8,119.17 is: 12,179.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,212.12 : 28,818.81 = 8,119.17 : x
  2. Step 2: Convert to fraction form
    19,212.12/28,818.81 = 8,119.17/x
  3. Step 3: Cross multiply
    19,212.12x = 28,818.81 × 8,119.17
  4. Step 4: Simplify right side
    19,212.12x = 233,984,817.59
  5. Step 5: Solve for x
    x = 233,984,817.59/19,212.12
  6. Step 6: Final answer
    x = 12,179.02

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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.