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Finding the Fourth Proportional to 18,668.48, 28,003.74 and 7,573.52

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Solution

The fourth proportional to 18,668.48, 28,003.74 and 7,573.52 is: 11,360.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,668.48 : 28,003.74 = 7,573.52 : x
  2. Step 2: Convert to fraction form
    18,668.48/28,003.74 = 7,573.52/x
  3. Step 3: Cross multiply
    18,668.48x = 28,003.74 × 7,573.52
  4. Step 4: Simplify right side
    18,668.48x = 212,086,884.96
  5. Step 5: Solve for x
    x = 212,086,884.96/18,668.48
  6. Step 6: Final answer
    x = 11,360.69

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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.