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Finding the Fourth Proportional to 19,190.84, 28,788.24 and 5,339.84

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Solution

The fourth proportional to 19,190.84, 28,788.24 and 5,339.84 is: 8,010.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,190.84 : 28,788.24 = 5,339.84 : x
  2. Step 2: Convert to fraction form
    19,190.84/28,788.24 = 5,339.84/x
  3. Step 3: Cross multiply
    19,190.84x = 28,788.24 × 5,339.84
  4. Step 4: Simplify right side
    19,190.84x = 153,724,595.48
  5. Step 5: Solve for x
    x = 153,724,595.48/19,190.84
  6. Step 6: Final answer
    x = 8,010.31

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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.