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Finding the Fourth Proportional to 19,113.54, 28,659.38 and 7,413.10

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Solution

The fourth proportional to 19,113.54, 28,659.38 and 7,413.10 is: 11,115.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,113.54 : 28,659.38 = 7,413.10 : x
  2. Step 2: Convert to fraction form
    19,113.54/28,659.38 = 7,413.10/x
  3. Step 3: Cross multiply
    19,113.54x = 28,659.38 × 7,413.10
  4. Step 4: Simplify right side
    19,113.54x = 212,454,849.88
  5. Step 5: Solve for x
    x = 212,454,849.88/19,113.54
  6. Step 6: Final answer
    x = 11,115.41

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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.