Home / 12,939.62-19,413.53-4,619.45

Finding the Fourth Proportional to 12,939.62, 19,413.53 and 4,619.45

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Solution

The fourth proportional to 12,939.62, 19,413.53 and 4,619.45 is: 6,930.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,939.62 : 19,413.53 = 4,619.45 : x
  2. Step 2: Convert to fraction form
    12,939.62/19,413.53 = 4,619.45/x
  3. Step 3: Cross multiply
    12,939.62x = 19,413.53 × 4,619.45
  4. Step 4: Simplify right side
    12,939.62x = 89,679,710.99
  5. Step 5: Solve for x
    x = 89,679,710.99/12,939.62
  6. Step 6: Final answer
    x = 6,930.63

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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.