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Finding the Fourth Proportional to 18,777.07, 28,163.78 and 4,926.07

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Solution

The fourth proportional to 18,777.07, 28,163.78 and 4,926.07 is: 7,388.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,777.07 : 28,163.78 = 4,926.07 : x
  2. Step 2: Convert to fraction form
    18,777.07/28,163.78 = 4,926.07/x
  3. Step 3: Cross multiply
    18,777.07x = 28,163.78 × 4,926.07
  4. Step 4: Simplify right side
    18,777.07x = 138,736,608.52
  5. Step 5: Solve for x
    x = 138,736,608.52/18,777.07
  6. Step 6: Final answer
    x = 7,388.62

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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.