Home / 21,127.33-31,687.81-7,084.97

Finding the Fourth Proportional to 21,127.33, 31,687.81 and 7,084.97

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Solution

The fourth proportional to 21,127.33, 31,687.81 and 7,084.97 is: 10,626.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,127.33 : 31,687.81 = 7,084.97 : x
  2. Step 2: Convert to fraction form
    21,127.33/31,687.81 = 7,084.97/x
  3. Step 3: Cross multiply
    21,127.33x = 31,687.81 × 7,084.97
  4. Step 4: Simplify right side
    21,127.33x = 224,507,125.89
  5. Step 5: Solve for x
    x = 224,507,125.89/21,127.33
  6. Step 6: Final answer
    x = 10,626.38

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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.