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Finding the Fourth Proportional to 13,266.54, 19,908 and 7,722.36

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Solution

The fourth proportional to 13,266.54, 19,908 and 7,722.36 is: 11,588.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,266.54 : 19,908 = 7,722.36 : x
  2. Step 2: Convert to fraction form
    13,266.54/19,908 = 7,722.36/x
  3. Step 3: Cross multiply
    13,266.54x = 19,908 × 7,722.36
  4. Step 4: Simplify right side
    13,266.54x = 153,736,742.88
  5. Step 5: Solve for x
    x = 153,736,742.88/13,266.54
  6. Step 6: Final answer
    x = 11,588.31

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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.