Home / 21,243.40-31,868.16-7,204.66

Finding the Fourth Proportional to 21,243.40, 31,868.16 and 7,204.66

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Solution

The fourth proportional to 21,243.40, 31,868.16 and 7,204.66 is: 10,808.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,243.40 : 31,868.16 = 7,204.66 : x
  2. Step 2: Convert to fraction form
    21,243.40/31,868.16 = 7,204.66/x
  3. Step 3: Cross multiply
    21,243.40x = 31,868.16 × 7,204.66
  4. Step 4: Simplify right side
    21,243.40x = 229,599,257.63
  5. Step 5: Solve for x
    x = 229,599,257.63/21,243.40
  6. Step 6: Final answer
    x = 10,808.03

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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.