Home / 21,301.97-31,903.74-20,563.88

Finding the Fourth Proportional to 21,301.97, 31,903.74 and 20,563.88

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Solution

The fourth proportional to 21,301.97, 31,903.74 and 20,563.88 is: 30,798.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,301.97 : 31,903.74 = 20,563.88 : x
  2. Step 2: Convert to fraction form
    21,301.97/31,903.74 = 20,563.88/x
  3. Step 3: Cross multiply
    21,301.97x = 31,903.74 × 20,563.88
  4. Step 4: Simplify right side
    21,301.97x = 656,064,521.39
  5. Step 5: Solve for x
    x = 656,064,521.39/21,301.97
  6. Step 6: Final answer
    x = 30,798.31

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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.