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Finding the Fourth Proportional to 19,039.62, 28,558.62 and 5,188.62

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Solution

The fourth proportional to 19,039.62, 28,558.62 and 5,188.62 is: 7,782.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,039.62 : 28,558.62 = 5,188.62 : x
  2. Step 2: Convert to fraction form
    19,039.62/28,558.62 = 5,188.62/x
  3. Step 3: Cross multiply
    19,039.62x = 28,558.62 × 5,188.62
  4. Step 4: Simplify right side
    19,039.62x = 148,179,826.90
  5. Step 5: Solve for x
    x = 148,179,826.90/19,039.62
  6. Step 6: Final answer
    x = 7,782.71

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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.