Home / 13,081.23-19,621.85-3,220.68

Finding the Fourth Proportional to 13,081.23, 19,621.85 and 3,220.68

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Solution

The fourth proportional to 13,081.23, 19,621.85 and 3,220.68 is: 4,831.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,081.23 : 19,621.85 = 3,220.68 : x
  2. Step 2: Convert to fraction form
    13,081.23/19,621.85 = 3,220.68/x
  3. Step 3: Cross multiply
    13,081.23x = 19,621.85 × 3,220.68
  4. Step 4: Simplify right side
    13,081.23x = 63,195,683.75
  5. Step 5: Solve for x
    x = 63,195,683.75/13,081.23
  6. Step 6: Final answer
    x = 4,831.02

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1.5x scale

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.