Home / 19,199.70-28,780.44-8,109.18

Finding the Fourth Proportional to 19,199.70, 28,780.44 and 8,109.18

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Solution

The fourth proportional to 19,199.70, 28,780.44 and 8,109.18 is: 12,155.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,199.70 : 28,780.44 = 8,109.18 : x
  2. Step 2: Convert to fraction form
    19,199.70/28,780.44 = 8,109.18/x
  3. Step 3: Cross multiply
    19,199.70x = 28,780.44 × 8,109.18
  4. Step 4: Simplify right side
    19,199.70x = 233,385,768.44
  5. Step 5: Solve for x
    x = 233,385,768.44/19,199.70
  6. Step 6: Final answer
    x = 12,155.70

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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.