Home / 30,938.80-46,413.48-12,209.05

Finding the Fourth Proportional to 30,938.80, 46,413.48 and 12,209.05

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Solution

The fourth proportional to 30,938.80, 46,413.48 and 12,209.05 is: 18,315.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,938.80 : 46,413.48 = 12,209.05 : x
  2. Step 2: Convert to fraction form
    30,938.80/46,413.48 = 12,209.05/x
  3. Step 3: Cross multiply
    30,938.80x = 46,413.48 × 12,209.05
  4. Step 4: Simplify right side
    30,938.80x = 566,664,497.99
  5. Step 5: Solve for x
    x = 566,664,497.99/30,938.80
  6. Step 6: Final answer
    x = 18,315.66

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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.