Home / 20,681.45-31,022.31-14,091.29

Finding the Fourth Proportional to 20,681.45, 31,022.31 and 14,091.29

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Solution

The fourth proportional to 20,681.45, 31,022.31 and 14,091.29 is: 21,137.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,681.45 : 31,022.31 = 14,091.29 : x
  2. Step 2: Convert to fraction form
    20,681.45/31,022.31 = 14,091.29/x
  3. Step 3: Cross multiply
    20,681.45x = 31,022.31 × 14,091.29
  4. Step 4: Simplify right side
    20,681.45x = 437,144,366.68
  5. Step 5: Solve for x
    x = 437,144,366.68/20,681.45
  6. Step 6: Final answer
    x = 21,137.03

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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.