Home / 13,081.84-19,622.58-3,221.20

Finding the Fourth Proportional to 13,081.84, 19,622.58 and 3,221.20

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Solution

The fourth proportional to 13,081.84, 19,622.58 and 3,221.20 is: 4,831.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,081.84 : 19,622.58 = 3,221.20 : x
  2. Step 2: Convert to fraction form
    13,081.84/19,622.58 = 3,221.20/x
  3. Step 3: Cross multiply
    13,081.84x = 19,622.58 × 3,221.20
  4. Step 4: Simplify right side
    13,081.84x = 63,208,254.70
  5. Step 5: Solve for x
    x = 63,208,254.70/13,081.84
  6. Step 6: Final answer
    x = 4,831.76

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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.