Home / 21,019.46-31,533.81-6,229.54

Finding the Fourth Proportional to 21,019.46, 31,533.81 and 6,229.54

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Solution

The fourth proportional to 21,019.46, 31,533.81 and 6,229.54 is: 9,345.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,019.46 : 31,533.81 = 6,229.54 : x
  2. Step 2: Convert to fraction form
    21,019.46/31,533.81 = 6,229.54/x
  3. Step 3: Cross multiply
    21,019.46x = 31,533.81 × 6,229.54
  4. Step 4: Simplify right side
    21,019.46x = 196,440,941.93
  5. Step 5: Solve for x
    x = 196,440,941.93/21,019.46
  6. Step 6: Final answer
    x = 9,345.67

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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.