Home / 21,272.74-31,902.62-7,418.50

Finding the Fourth Proportional to 21,272.74, 31,902.62 and 7,418.50

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Solution

The fourth proportional to 21,272.74, 31,902.62 and 7,418.50 is: 11,125.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,272.74 : 31,902.62 = 7,418.50 : x
  2. Step 2: Convert to fraction form
    21,272.74/31,902.62 = 7,418.50/x
  3. Step 3: Cross multiply
    21,272.74x = 31,902.62 × 7,418.50
  4. Step 4: Simplify right side
    21,272.74x = 236,669,586.47
  5. Step 5: Solve for x
    x = 236,669,586.47/21,272.74
  6. Step 6: Final answer
    x = 11,125.49

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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.