Home / 21,078.55-31,619.94-6,086.04

Finding the Fourth Proportional to 21,078.55, 31,619.94 and 6,086.04

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Solution

The fourth proportional to 21,078.55, 31,619.94 and 6,086.04 is: 9,129.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,078.55 : 31,619.94 = 6,086.04 : x
  2. Step 2: Convert to fraction form
    21,078.55/31,619.94 = 6,086.04/x
  3. Step 3: Cross multiply
    21,078.55x = 31,619.94 × 6,086.04
  4. Step 4: Simplify right side
    21,078.55x = 192,440,219.64
  5. Step 5: Solve for x
    x = 192,440,219.64/21,078.55
  6. Step 6: Final answer
    x = 9,129.67

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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.