Home / 21,833.20-32,739-10,138.96

Finding the Fourth Proportional to 21,833.20, 32,739 and 10,138.96

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Solution

The fourth proportional to 21,833.20, 32,739 and 10,138.96 is: 15,203.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,833.20 : 32,739 = 10,138.96 : x
  2. Step 2: Convert to fraction form
    21,833.20/32,739 = 10,138.96/x
  3. Step 3: Cross multiply
    21,833.20x = 32,739 × 10,138.96
  4. Step 4: Simplify right side
    21,833.20x = 331,939,411.44
  5. Step 5: Solve for x
    x = 331,939,411.44/21,833.20
  6. Step 6: Final answer
    x = 15,203.42

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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.