Home / 21,197.82-31,827.96-11,856.14

Finding the Fourth Proportional to 21,197.82, 31,827.96 and 11,856.14

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Solution

The fourth proportional to 21,197.82, 31,827.96 and 11,856.14 is: 17,801.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,197.82 : 31,827.96 = 11,856.14 : x
  2. Step 2: Convert to fraction form
    21,197.82/31,827.96 = 11,856.14/x
  3. Step 3: Cross multiply
    21,197.82x = 31,827.96 × 11,856.14
  4. Step 4: Simplify right side
    21,197.82x = 377,356,749.67
  5. Step 5: Solve for x
    x = 377,356,749.67/21,197.82
  6. Step 6: Final answer
    x = 17,801.68

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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.