Home / 21,413.46-29,552.98-12,919.70

Finding the Fourth Proportional to 21,413.46, 29,552.98 and 12,919.70

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Solution

The fourth proportional to 21,413.46, 29,552.98 and 12,919.70 is: 17,830.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,413.46 : 29,552.98 = 12,919.70 : x
  2. Step 2: Convert to fraction form
    21,413.46/29,552.98 = 12,919.70/x
  3. Step 3: Cross multiply
    21,413.46x = 29,552.98 × 12,919.70
  4. Step 4: Simplify right side
    21,413.46x = 381,815,665.18
  5. Step 5: Solve for x
    x = 381,815,665.18/21,413.46
  6. Step 6: Final answer
    x = 17,830.64

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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.