Home / 20,984.58-31,475.88-7,835.94

Finding the Fourth Proportional to 20,984.58, 31,475.88 and 7,835.94

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Solution

The fourth proportional to 20,984.58, 31,475.88 and 7,835.94 is: 11,753.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,984.58 : 31,475.88 = 7,835.94 : x
  2. Step 2: Convert to fraction form
    20,984.58/31,475.88 = 7,835.94/x
  3. Step 3: Cross multiply
    20,984.58x = 31,475.88 × 7,835.94
  4. Step 4: Simplify right side
    20,984.58x = 246,643,107.13
  5. Step 5: Solve for x
    x = 246,643,107.13/20,984.58
  6. Step 6: Final answer
    x = 11,753.54

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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.