Home / 20,698.97-31,045.30-7,551.36

Finding the Fourth Proportional to 20,698.97, 31,045.30 and 7,551.36

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Solution

The fourth proportional to 20,698.97, 31,045.30 and 7,551.36 is: 11,325.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,698.97 : 31,045.30 = 7,551.36 : x
  2. Step 2: Convert to fraction form
    20,698.97/31,045.30 = 7,551.36/x
  3. Step 3: Cross multiply
    20,698.97x = 31,045.30 × 7,551.36
  4. Step 4: Simplify right side
    20,698.97x = 234,434,217.73
  5. Step 5: Solve for x
    x = 234,434,217.73/20,698.97
  6. Step 6: Final answer
    x = 11,325.89

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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.