Home / 21,141-31,723.16-11,786.27

Finding the Fourth Proportional to 21,141, 31,723.16 and 11,786.27

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Solution

The fourth proportional to 21,141, 31,723.16 and 11,786.27 is: 17,685.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,141 : 31,723.16 = 11,786.27 : x
  2. Step 2: Convert to fraction form
    21,141/31,723.16 = 11,786.27/x
  3. Step 3: Cross multiply
    21,141x = 31,723.16 × 11,786.27
  4. Step 4: Simplify right side
    21,141x = 373,897,511.47
  5. Step 5: Solve for x
    x = 373,897,511.47/21,141
  6. Step 6: Final answer
    x = 17,685.90

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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.