Home / 20,958-28,922.52-12,573.36

Finding the Fourth Proportional to 20,958, 28,922.52 and 12,573.36

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Solution

The fourth proportional to 20,958, 28,922.52 and 12,573.36 is: 17,351.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,958 : 28,922.52 = 12,573.36 : x
  2. Step 2: Convert to fraction form
    20,958/28,922.52 = 12,573.36/x
  3. Step 3: Cross multiply
    20,958x = 28,922.52 × 12,573.36
  4. Step 4: Simplify right side
    20,958x = 363,653,256.07
  5. Step 5: Solve for x
    x = 363,653,256.07/20,958
  6. Step 6: Final answer
    x = 17,351.52

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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.