Home / 20,826.99-31,243.73-6,972.75

Finding the Fourth Proportional to 20,826.99, 31,243.73 and 6,972.75

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Solution

The fourth proportional to 20,826.99, 31,243.73 and 6,972.75 is: 10,460.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,826.99 : 31,243.73 = 6,972.75 : x
  2. Step 2: Convert to fraction form
    20,826.99/31,243.73 = 6,972.75/x
  3. Step 3: Cross multiply
    20,826.99x = 31,243.73 × 6,972.75
  4. Step 4: Simplify right side
    20,826.99x = 217,854,683.49
  5. Step 5: Solve for x
    x = 217,854,683.49/20,826.99
  6. Step 6: Final answer
    x = 10,460.21

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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.