Home / 21,156.26-31,742.69-8,682.26

Finding the Fourth Proportional to 21,156.26, 31,742.69 and 8,682.26

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Solution

The fourth proportional to 21,156.26, 31,742.69 and 8,682.26 is: 13,026.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,156.26 : 31,742.69 = 8,682.26 : x
  2. Step 2: Convert to fraction form
    21,156.26/31,742.69 = 8,682.26/x
  3. Step 3: Cross multiply
    21,156.26x = 31,742.69 × 8,682.26
  4. Step 4: Simplify right side
    21,156.26x = 275,598,085.55
  5. Step 5: Solve for x
    x = 275,598,085.55/21,156.26
  6. Step 6: Final answer
    x = 13,026.79

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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.