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Finding the Fourth Proportional to 14,276.78, 21,409.82 and 4,914.14

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Solution

The fourth proportional to 14,276.78, 21,409.82 and 4,914.14 is: 7,369.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,276.78 : 21,409.82 = 4,914.14 : x
  2. Step 2: Convert to fraction form
    14,276.78/21,409.82 = 4,914.14/x
  3. Step 3: Cross multiply
    14,276.78x = 21,409.82 × 4,914.14
  4. Step 4: Simplify right side
    14,276.78x = 105,210,852.85
  5. Step 5: Solve for x
    x = 105,210,852.85/14,276.78
  6. Step 6: Final answer
    x = 7,369.37

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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.