Home / 30,581.15-45,883.26-20,812.55

Finding the Fourth Proportional to 30,581.15, 45,883.26 and 20,812.55

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Solution

The fourth proportional to 30,581.15, 45,883.26 and 20,812.55 is: 31,226.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,581.15 : 45,883.26 = 20,812.55 : x
  2. Step 2: Convert to fraction form
    30,581.15/45,883.26 = 20,812.55/x
  3. Step 3: Cross multiply
    30,581.15x = 45,883.26 × 20,812.55
  4. Step 4: Simplify right side
    30,581.15x = 954,947,413.50
  5. Step 5: Solve for x
    x = 954,947,413.50/30,581.15
  6. Step 6: Final answer
    x = 31,226.67

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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.