Home / 21,076.94-31,619.98-6,287.06

Finding the Fourth Proportional to 21,076.94, 31,619.98 and 6,287.06

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Solution

The fourth proportional to 21,076.94, 31,619.98 and 6,287.06 is: 9,431.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,076.94 : 31,619.98 = 6,287.06 : x
  2. Step 2: Convert to fraction form
    21,076.94/31,619.98 = 6,287.06/x
  3. Step 3: Cross multiply
    21,076.94x = 31,619.98 × 6,287.06
  4. Step 4: Simplify right side
    21,076.94x = 198,796,711.46
  5. Step 5: Solve for x
    x = 198,796,711.46/21,076.94
  6. Step 6: Final answer
    x = 9,431.95

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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.