Home / 20,278.95-30,413.53-5,487.99

Finding the Fourth Proportional to 20,278.95, 30,413.53 and 5,487.99

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Solution

The fourth proportional to 20,278.95, 30,413.53 and 5,487.99 is: 8,230.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,278.95 : 30,413.53 = 5,487.99 : x
  2. Step 2: Convert to fraction form
    20,278.95/30,413.53 = 5,487.99/x
  3. Step 3: Cross multiply
    20,278.95x = 30,413.53 × 5,487.99
  4. Step 4: Simplify right side
    20,278.95x = 166,909,148.50
  5. Step 5: Solve for x
    x = 166,909,148.50/20,278.95
  6. Step 6: Final answer
    x = 8,230.66

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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.