Home / 21,008.22-28,989.98-11,576.79

Finding the Fourth Proportional to 21,008.22, 28,989.98 and 11,576.79

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Solution

The fourth proportional to 21,008.22, 28,989.98 and 11,576.79 is: 15,975.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,008.22 : 28,989.98 = 11,576.79 : x
  2. Step 2: Convert to fraction form
    21,008.22/28,989.98 = 11,576.79/x
  3. Step 3: Cross multiply
    21,008.22x = 28,989.98 × 11,576.79
  4. Step 4: Simplify right side
    21,008.22x = 335,610,910.56
  5. Step 5: Solve for x
    x = 335,610,910.56/21,008.22
  6. Step 6: Final answer
    x = 15,975.22

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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.