Home / 20,470.46-30,706.77-6,620.54

Finding the Fourth Proportional to 20,470.46, 30,706.77 and 6,620.54

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Solution

The fourth proportional to 20,470.46, 30,706.77 and 6,620.54 is: 9,931.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,470.46 : 30,706.77 = 6,620.54 : x
  2. Step 2: Convert to fraction form
    20,470.46/30,706.77 = 6,620.54/x
  3. Step 3: Cross multiply
    20,470.46x = 30,706.77 × 6,620.54
  4. Step 4: Simplify right side
    20,470.46x = 203,295,399.06
  5. Step 5: Solve for x
    x = 203,295,399.06/20,470.46
  6. Step 6: Final answer
    x = 9,931.16

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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.