Home / 38,413.31-57,619.97-12,120.10

Finding the Fourth Proportional to 38,413.31, 57,619.97 and 12,120.10

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Solution

The fourth proportional to 38,413.31, 57,619.97 and 12,120.10 is: 18,180.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,413.31 : 57,619.97 = 12,120.10 : x
  2. Step 2: Convert to fraction form
    38,413.31/57,619.97 = 12,120.10/x
  3. Step 3: Cross multiply
    38,413.31x = 57,619.97 × 12,120.10
  4. Step 4: Simplify right side
    38,413.31x = 698,359,798.40
  5. Step 5: Solve for x
    x = 698,359,798.40/38,413.31
  6. Step 6: Final answer
    x = 18,180.15

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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.