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Finding the Fourth Proportional to 19,059.79, 28,589.98 and 7,219.11

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Solution

The fourth proportional to 19,059.79, 28,589.98 and 7,219.11 is: 10,828.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,059.79 : 28,589.98 = 7,219.11 : x
  2. Step 2: Convert to fraction form
    19,059.79/28,589.98 = 7,219.11/x
  3. Step 3: Cross multiply
    19,059.79x = 28,589.98 × 7,219.11
  4. Step 4: Simplify right side
    19,059.79x = 206,394,175.39
  5. Step 5: Solve for x
    x = 206,394,175.39/19,059.79
  6. Step 6: Final answer
    x = 10,828.77

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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.