Home / 13,081.34-19,621.83-3,220.70

Finding the Fourth Proportional to 13,081.34, 19,621.83 and 3,220.70

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Solution

The fourth proportional to 13,081.34, 19,621.83 and 3,220.70 is: 4,831.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,081.34 : 19,621.83 = 3,220.70 : x
  2. Step 2: Convert to fraction form
    13,081.34/19,621.83 = 3,220.70/x
  3. Step 3: Cross multiply
    13,081.34x = 19,621.83 × 3,220.70
  4. Step 4: Simplify right side
    13,081.34x = 63,196,027.88
  5. Step 5: Solve for x
    x = 63,196,027.88/13,081.34
  6. Step 6: Final answer
    x = 4,831.01

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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.