Home / 21,260.94-31,876.98-11,907.38

Finding the Fourth Proportional to 21,260.94, 31,876.98 and 11,907.38

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Solution

The fourth proportional to 21,260.94, 31,876.98 and 11,907.38 is: 17,852.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,260.94 : 31,876.98 = 11,907.38 : x
  2. Step 2: Convert to fraction form
    21,260.94/31,876.98 = 11,907.38/x
  3. Step 3: Cross multiply
    21,260.94x = 31,876.98 × 11,907.38
  4. Step 4: Simplify right side
    21,260.94x = 379,571,314.11
  5. Step 5: Solve for x
    x = 379,571,314.11/21,260.94
  6. Step 6: Final answer
    x = 17,852.99

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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.