Home / 20,940.15-31,373.31-11,057.67

Finding the Fourth Proportional to 20,940.15, 31,373.31 and 11,057.67

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Solution

The fourth proportional to 20,940.15, 31,373.31 and 11,057.67 is: 16,567.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,940.15 : 31,373.31 = 11,057.67 : x
  2. Step 2: Convert to fraction form
    20,940.15/31,373.31 = 11,057.67/x
  3. Step 3: Cross multiply
    20,940.15x = 31,373.31 × 11,057.67
  4. Step 4: Simplify right side
    20,940.15x = 346,915,708.79
  5. Step 5: Solve for x
    x = 346,915,708.79/20,940.15
  6. Step 6: Final answer
    x = 16,567.01

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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.