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Finding the Fourth Proportional to 18,923.27, 28,368.43 and 7,823.03

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Solution

The fourth proportional to 18,923.27, 28,368.43 and 7,823.03 is: 11,727.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,923.27 : 28,368.43 = 7,823.03 : x
  2. Step 2: Convert to fraction form
    18,923.27/28,368.43 = 7,823.03/x
  3. Step 3: Cross multiply
    18,923.27x = 28,368.43 × 7,823.03
  4. Step 4: Simplify right side
    18,923.27x = 221,926,917.54
  5. Step 5: Solve for x
    x = 221,926,917.54/18,923.27
  6. Step 6: Final answer
    x = 11,727.73

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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.