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Finding the Fourth Proportional to 18,975, 28,413.90 and 14,037.24

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Solution

The fourth proportional to 18,975, 28,413.90 and 14,037.24 is: 21,019.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,975 : 28,413.90 = 14,037.24 : x
  2. Step 2: Convert to fraction form
    18,975/28,413.90 = 14,037.24/x
  3. Step 3: Cross multiply
    18,975x = 28,413.90 × 14,037.24
  4. Step 4: Simplify right side
    18,975x = 398,852,733.64
  5. Step 5: Solve for x
    x = 398,852,733.64/18,975
  6. Step 6: Final answer
    x = 21,019.91

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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.