Home / 18,960.49-28,431.37-5,809.69

Finding the Fourth Proportional to 18,960.49, 28,431.37 and 5,809.69

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Solution

The fourth proportional to 18,960.49, 28,431.37 and 5,809.69 is: 8,711.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,960.49 : 28,431.37 = 5,809.69 : x
  2. Step 2: Convert to fraction form
    18,960.49/28,431.37 = 5,809.69/x
  3. Step 3: Cross multiply
    18,960.49x = 28,431.37 × 5,809.69
  4. Step 4: Simplify right side
    18,960.49x = 165,177,445.98
  5. Step 5: Solve for x
    x = 165,177,445.98/18,960.49
  6. Step 6: Final answer
    x = 8,711.67

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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.