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Finding the Fourth Proportional to 19,089.63, 28,634.98 and 5,238.63

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Solution

The fourth proportional to 19,089.63, 28,634.98 and 5,238.63 is: 7,858.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,089.63 : 28,634.98 = 5,238.63 : x
  2. Step 2: Convert to fraction form
    19,089.63/28,634.98 = 5,238.63/x
  3. Step 3: Cross multiply
    19,089.63x = 28,634.98 × 5,238.63
  4. Step 4: Simplify right side
    19,089.63x = 150,008,065.28
  5. Step 5: Solve for x
    x = 150,008,065.28/19,089.63
  6. Step 6: Final answer
    x = 7,858.09

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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.