Home / 21,243.63-31,863.61-9,996.31

Finding the Fourth Proportional to 21,243.63, 31,863.61 and 9,996.31

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Solution

The fourth proportional to 21,243.63, 31,863.61 and 9,996.31 is: 14,993.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,243.63 : 31,863.61 = 9,996.31 : x
  2. Step 2: Convert to fraction form
    21,243.63/31,863.61 = 9,996.31/x
  3. Step 3: Cross multiply
    21,243.63x = 31,863.61 × 9,996.31
  4. Step 4: Simplify right side
    21,243.63x = 318,518,396.37
  5. Step 5: Solve for x
    x = 318,518,396.37/21,243.63
  6. Step 6: Final answer
    x = 14,993.59

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1.5x scale

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.