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Finding the Fourth Proportional to 18,640.76, 27,967.29 and 7,556.77

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Solution

The fourth proportional to 18,640.76, 27,967.29 and 7,556.77 is: 11,337.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,640.76 : 27,967.29 = 7,556.77 : x
  2. Step 2: Convert to fraction form
    18,640.76/27,967.29 = 7,556.77/x
  3. Step 3: Cross multiply
    18,640.76x = 27,967.29 × 7,556.77
  4. Step 4: Simplify right side
    18,640.76x = 211,342,378.05
  5. Step 5: Solve for x
    x = 211,342,378.05/18,640.76
  6. Step 6: Final answer
    x = 11,337.65

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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.