Home / 12,899.26-19,348.88-8,515.69

Finding the Fourth Proportional to 12,899.26, 19,348.88 and 8,515.69

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Solution

The fourth proportional to 12,899.26, 19,348.88 and 8,515.69 is: 12,773.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,899.26 : 19,348.88 = 8,515.69 : x
  2. Step 2: Convert to fraction form
    12,899.26/19,348.88 = 8,515.69/x
  3. Step 3: Cross multiply
    12,899.26x = 19,348.88 × 8,515.69
  4. Step 4: Simplify right side
    12,899.26x = 164,768,986.58
  5. Step 5: Solve for x
    x = 164,768,986.58/12,899.26
  6. Step 6: Final answer
    x = 12,773.53

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Similar ratio
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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.