Home / 21,763.31-30,031.83-12,202.47

Finding the Fourth Proportional to 21,763.31, 30,031.83 and 12,202.47

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Solution

The fourth proportional to 21,763.31, 30,031.83 and 12,202.47 is: 16,838.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,763.31 : 30,031.83 = 12,202.47 : x
  2. Step 2: Convert to fraction form
    21,763.31/30,031.83 = 12,202.47/x
  3. Step 3: Cross multiply
    21,763.31x = 30,031.83 × 12,202.47
  4. Step 4: Simplify right side
    21,763.31x = 366,462,504.62
  5. Step 5: Solve for x
    x = 366,462,504.62/21,763.31
  6. Step 6: Final answer
    x = 16,838.55

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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.