Home / 19,319.21-28,975.38-8,786.75

Finding the Fourth Proportional to 19,319.21, 28,975.38 and 8,786.75

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Solution

The fourth proportional to 19,319.21, 28,975.38 and 8,786.75 is: 13,178.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,319.21 : 28,975.38 = 8,786.75 : x
  2. Step 2: Convert to fraction form
    19,319.21/28,975.38 = 8,786.75/x
  3. Step 3: Cross multiply
    19,319.21x = 28,975.38 × 8,786.75
  4. Step 4: Simplify right side
    19,319.21x = 254,599,420.22
  5. Step 5: Solve for x
    x = 254,599,420.22/19,319.21
  6. Step 6: Final answer
    x = 13,178.56

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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.