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Finding the Fourth Proportional to 13,144.70, 19,722.45 and 4,828.70

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Solution

The fourth proportional to 13,144.70, 19,722.45 and 4,828.70 is: 7,245.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,144.70 : 19,722.45 = 4,828.70 : x
  2. Step 2: Convert to fraction form
    13,144.70/19,722.45 = 4,828.70/x
  3. Step 3: Cross multiply
    13,144.70x = 19,722.45 × 4,828.70
  4. Step 4: Simplify right side
    13,144.70x = 95,233,794.32
  5. Step 5: Solve for x
    x = 95,233,794.32/13,144.70
  6. Step 6: Final answer
    x = 7,245.03

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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.