Home / 20,976.67-31,461.09-6,936.85

Finding the Fourth Proportional to 20,976.67, 31,461.09 and 6,936.85

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Solution

The fourth proportional to 20,976.67, 31,461.09 and 6,936.85 is: 10,403.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,976.67 : 31,461.09 = 6,936.85 : x
  2. Step 2: Convert to fraction form
    20,976.67/31,461.09 = 6,936.85/x
  3. Step 3: Cross multiply
    20,976.67x = 31,461.09 × 6,936.85
  4. Step 4: Simplify right side
    20,976.67x = 218,240,862.17
  5. Step 5: Solve for x
    x = 218,240,862.17/20,976.67
  6. Step 6: Final answer
    x = 10,403.98

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1.5x scale

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.