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Finding the Fourth Proportional to 19,010.19, 28,520.14 and 7,913.19

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Solution

The fourth proportional to 19,010.19, 28,520.14 and 7,913.19 is: 11,871.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,010.19 : 28,520.14 = 7,913.19 : x
  2. Step 2: Convert to fraction form
    19,010.19/28,520.14 = 7,913.19/x
  3. Step 3: Cross multiply
    19,010.19x = 28,520.14 × 7,913.19
  4. Step 4: Simplify right side
    19,010.19x = 225,685,286.65
  5. Step 5: Solve for x
    x = 225,685,286.65/19,010.19
  6. Step 6: Final answer
    x = 11,871.81

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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.