Home / 14,413.62-19,907.20-9,689.70

Finding the Fourth Proportional to 14,413.62, 19,907.20 and 9,689.70

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Solution

The fourth proportional to 14,413.62, 19,907.20 and 9,689.70 is: 13,382.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,413.62 : 19,907.20 = 9,689.70 : x
  2. Step 2: Convert to fraction form
    14,413.62/19,907.20 = 9,689.70/x
  3. Step 3: Cross multiply
    14,413.62x = 19,907.20 × 9,689.70
  4. Step 4: Simplify right side
    14,413.62x = 192,894,795.84
  5. Step 5: Solve for x
    x = 192,894,795.84/14,413.62
  6. Step 6: Final answer
    x = 13,382.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.