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Finding the Fourth Proportional to 19,011.27, 28,516.90 and 7,923.18

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Solution

The fourth proportional to 19,011.27, 28,516.90 and 7,923.18 is: 11,884.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,011.27 : 28,516.90 = 7,923.18 : x
  2. Step 2: Convert to fraction form
    19,011.27/28,516.90 = 7,923.18/x
  3. Step 3: Cross multiply
    19,011.27x = 28,516.90 × 7,923.18
  4. Step 4: Simplify right side
    19,011.27x = 225,944,480.26
  5. Step 5: Solve for x
    x = 225,944,480.26/19,011.27
  6. Step 6: Final answer
    x = 11,884.77

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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.