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Finding the Fourth Proportional to 18,896.93, 28,344.46 and 7,049.78

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Solution

The fourth proportional to 18,896.93, 28,344.46 and 7,049.78 is: 10,574.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,896.93 : 28,344.46 = 7,049.78 : x
  2. Step 2: Convert to fraction form
    18,896.93/28,344.46 = 7,049.78/x
  3. Step 3: Cross multiply
    18,896.93x = 28,344.46 × 7,049.78
  4. Step 4: Simplify right side
    18,896.93x = 199,822,207.22
  5. Step 5: Solve for x
    x = 199,822,207.22/18,896.93
  6. Step 6: Final answer
    x = 10,574.32

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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.