Home / 18,743.40-28,115.10-16,896.60

Finding the Fourth Proportional to 18,743.40, 28,115.10 and 16,896.60

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Solution

The fourth proportional to 18,743.40, 28,115.10 and 16,896.60 is: 25,344.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,743.40 : 28,115.10 = 16,896.60 : x
  2. Step 2: Convert to fraction form
    18,743.40/28,115.10 = 16,896.60/x
  3. Step 3: Cross multiply
    18,743.40x = 28,115.10 × 16,896.60
  4. Step 4: Simplify right side
    18,743.40x = 475,049,598.66
  5. Step 5: Solve for x
    x = 475,049,598.66/18,743.40
  6. Step 6: Final answer
    x = 25,344.90

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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.