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Finding the Fourth Proportional to 18,891.71, 28,336.53 and 5,743.05

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Solution

The fourth proportional to 18,891.71, 28,336.53 and 5,743.05 is: 8,614.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,891.71 : 28,336.53 = 5,743.05 : x
  2. Step 2: Convert to fraction form
    18,891.71/28,336.53 = 5,743.05/x
  3. Step 3: Cross multiply
    18,891.71x = 28,336.53 × 5,743.05
  4. Step 4: Simplify right side
    18,891.71x = 162,738,108.62
  5. Step 5: Solve for x
    x = 162,738,108.62/18,891.71
  6. Step 6: Final answer
    x = 8,614.26

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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.