Home / 20,896.63-31,344.84-5,101.75

Finding the Fourth Proportional to 20,896.63, 31,344.84 and 5,101.75

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Solution

The fourth proportional to 20,896.63, 31,344.84 and 5,101.75 is: 7,652.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,896.63 : 31,344.84 = 5,101.75 : x
  2. Step 2: Convert to fraction form
    20,896.63/31,344.84 = 5,101.75/x
  3. Step 3: Cross multiply
    20,896.63x = 31,344.84 × 5,101.75
  4. Step 4: Simplify right side
    20,896.63x = 159,913,576.65
  5. Step 5: Solve for x
    x = 159,913,576.65/20,896.63
  6. Step 6: Final answer
    x = 7,652.60

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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.