Home / 14,103.69-21,141.81-7,857.96

Finding the Fourth Proportional to 14,103.69, 21,141.81 and 7,857.96

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Solution

The fourth proportional to 14,103.69, 21,141.81 and 7,857.96 is: 11,779.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,103.69 : 21,141.81 = 7,857.96 : x
  2. Step 2: Convert to fraction form
    14,103.69/21,141.81 = 7,857.96/x
  3. Step 3: Cross multiply
    14,103.69x = 21,141.81 × 7,857.96
  4. Step 4: Simplify right side
    14,103.69x = 166,131,497.31
  5. Step 5: Solve for x
    x = 166,131,497.31/14,103.69
  6. Step 6: Final answer
    x = 11,779.29

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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.