Home / 28,971.48-39,998.70-19,912.44

Finding the Fourth Proportional to 28,971.48, 39,998.70 and 19,912.44

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Solution

The fourth proportional to 28,971.48, 39,998.70 and 19,912.44 is: 27,491.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,971.48 : 39,998.70 = 19,912.44 : x
  2. Step 2: Convert to fraction form
    28,971.48/39,998.70 = 19,912.44/x
  3. Step 3: Cross multiply
    28,971.48x = 39,998.70 × 19,912.44
  4. Step 4: Simplify right side
    28,971.48x = 796,471,713.83
  5. Step 5: Solve for x
    x = 796,471,713.83/28,971.48
  6. Step 6: Final answer
    x = 27,491.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.