Home / 20,945.41-28,909.08-13,283.73

Finding the Fourth Proportional to 20,945.41, 28,909.08 and 13,283.73

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Solution

The fourth proportional to 20,945.41, 28,909.08 and 13,283.73 is: 18,334.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,945.41 : 28,909.08 = 13,283.73 : x
  2. Step 2: Convert to fraction form
    20,945.41/28,909.08 = 13,283.73/x
  3. Step 3: Cross multiply
    20,945.41x = 28,909.08 × 13,283.73
  4. Step 4: Simplify right side
    20,945.41x = 384,020,413.27
  5. Step 5: Solve for x
    x = 384,020,413.27/20,945.41
  6. Step 6: Final answer
    x = 18,334.35

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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.