Home / 28,413.99-39,211.70-18,342.86

Finding the Fourth Proportional to 28,413.99, 39,211.70 and 18,342.86

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Solution

The fourth proportional to 28,413.99, 39,211.70 and 18,342.86 is: 25,313.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,413.99 : 39,211.70 = 18,342.86 : x
  2. Step 2: Convert to fraction form
    28,413.99/39,211.70 = 18,342.86/x
  3. Step 3: Cross multiply
    28,413.99x = 39,211.70 × 18,342.86
  4. Step 4: Simplify right side
    28,413.99x = 719,254,435.69
  5. Step 5: Solve for x
    x = 719,254,435.69/28,413.99
  6. Step 6: Final answer
    x = 25,313.39

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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.