Home / 13,220.82-19,802.07-8,015.76

Finding the Fourth Proportional to 13,220.82, 19,802.07 and 8,015.76

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Solution

The fourth proportional to 13,220.82, 19,802.07 and 8,015.76 is: 12,005.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,220.82 : 19,802.07 = 8,015.76 : x
  2. Step 2: Convert to fraction form
    13,220.82/19,802.07 = 8,015.76/x
  3. Step 3: Cross multiply
    13,220.82x = 19,802.07 × 8,015.76
  4. Step 4: Simplify right side
    13,220.82x = 158,728,640.62
  5. Step 5: Solve for x
    x = 158,728,640.62/13,220.82
  6. Step 6: Final answer
    x = 12,005.96

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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.