Home / 12,816.99-17,685.33-8,561.23

Finding the Fourth Proportional to 12,816.99, 17,685.33 and 8,561.23

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Solution

The fourth proportional to 12,816.99, 17,685.33 and 8,561.23 is: 11,813.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,816.99 : 17,685.33 = 8,561.23 : x
  2. Step 2: Convert to fraction form
    12,816.99/17,685.33 = 8,561.23/x
  3. Step 3: Cross multiply
    12,816.99x = 17,685.33 × 8,561.23
  4. Step 4: Simplify right side
    12,816.99x = 151,408,046.52
  5. Step 5: Solve for x
    x = 151,408,046.52/12,816.99
  6. Step 6: Final answer
    x = 11,813.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.