Home / 19,193.70-28,790.55-8,112.90

Finding the Fourth Proportional to 19,193.70, 28,790.55 and 8,112.90

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Solution

The fourth proportional to 19,193.70, 28,790.55 and 8,112.90 is: 12,169.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,193.70 : 28,790.55 = 8,112.90 : x
  2. Step 2: Convert to fraction form
    19,193.70/28,790.55 = 8,112.90/x
  3. Step 3: Cross multiply
    19,193.70x = 28,790.55 × 8,112.90
  4. Step 4: Simplify right side
    19,193.70x = 233,574,853.10
  5. Step 5: Solve for x
    x = 233,574,853.10/19,193.70
  6. Step 6: Final answer
    x = 12,169.35

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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.