Home / 38,940.90-58,413.42-12,643.71

Finding the Fourth Proportional to 38,940.90, 58,413.42 and 12,643.71

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Solution

The fourth proportional to 38,940.90, 58,413.42 and 12,643.71 is: 18,966.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,940.90 : 58,413.42 = 12,643.71 : x
  2. Step 2: Convert to fraction form
    38,940.90/58,413.42 = 12,643.71/x
  3. Step 3: Cross multiply
    38,940.90x = 58,413.42 × 12,643.71
  4. Step 4: Simplify right side
    38,940.90x = 738,562,342.59
  5. Step 5: Solve for x
    x = 738,562,342.59/38,940.90
  6. Step 6: Final answer
    x = 18,966.24

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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.