Home / 21,084.84-31,610.70-7,935.66

Finding the Fourth Proportional to 21,084.84, 31,610.70 and 7,935.66

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Solution

The fourth proportional to 21,084.84, 31,610.70 and 7,935.66 is: 11,897.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,084.84 : 31,610.70 = 7,935.66 : x
  2. Step 2: Convert to fraction form
    21,084.84/31,610.70 = 7,935.66/x
  3. Step 3: Cross multiply
    21,084.84x = 31,610.70 × 7,935.66
  4. Step 4: Simplify right side
    21,084.84x = 250,851,767.56
  5. Step 5: Solve for x
    x = 250,851,767.56/21,084.84
  6. Step 6: Final answer
    x = 11,897.26

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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.