Home / 15,682.90-21,642.31-8,512.96

Finding the Fourth Proportional to 15,682.90, 21,642.31 and 8,512.96

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Solution

The fourth proportional to 15,682.90, 21,642.31 and 8,512.96 is: 11,747.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,682.90 : 21,642.31 = 8,512.96 : x
  2. Step 2: Convert to fraction form
    15,682.90/21,642.31 = 8,512.96/x
  3. Step 3: Cross multiply
    15,682.90x = 21,642.31 × 8,512.96
  4. Step 4: Simplify right side
    15,682.90x = 184,239,968.56
  5. Step 5: Solve for x
    x = 184,239,968.56/15,682.90
  6. Step 6: Final answer
    x = 11,747.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.