Home / 20,586.35-28,391.33-13,413.54

Finding the Fourth Proportional to 20,586.35, 28,391.33 and 13,413.54

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Solution

The fourth proportional to 20,586.35, 28,391.33 and 13,413.54 is: 18,499.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,586.35 : 28,391.33 = 13,413.54 : x
  2. Step 2: Convert to fraction form
    20,586.35/28,391.33 = 13,413.54/x
  3. Step 3: Cross multiply
    20,586.35x = 28,391.33 × 13,413.54
  4. Step 4: Simplify right side
    20,586.35x = 380,828,274.14
  5. Step 5: Solve for x
    x = 380,828,274.14/20,586.35
  6. Step 6: Final answer
    x = 18,499.07

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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.