Home / 19,040.25-28,518.79-7,913.21

Finding the Fourth Proportional to 19,040.25, 28,518.79 and 7,913.21

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Solution

The fourth proportional to 19,040.25, 28,518.79 and 7,913.21 is: 11,852.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,040.25 : 28,518.79 = 7,913.21 : x
  2. Step 2: Convert to fraction form
    19,040.25/28,518.79 = 7,913.21/x
  3. Step 3: Cross multiply
    19,040.25x = 28,518.79 × 7,913.21
  4. Step 4: Simplify right side
    19,040.25x = 225,675,174.22
  5. Step 5: Solve for x
    x = 225,675,174.22/19,040.25
  6. Step 6: Final answer
    x = 11,852.53

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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.