Home / 28,839.54-39,739.50-21,273.87

Finding the Fourth Proportional to 28,839.54, 39,739.50 and 21,273.87

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Solution

The fourth proportional to 28,839.54, 39,739.50 and 21,273.87 is: 29,314.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,839.54 : 39,739.50 = 21,273.87 : x
  2. Step 2: Convert to fraction form
    28,839.54/39,739.50 = 21,273.87/x
  3. Step 3: Cross multiply
    28,839.54x = 39,739.50 × 21,273.87
  4. Step 4: Simplify right side
    28,839.54x = 845,412,956.87
  5. Step 5: Solve for x
    x = 845,412,956.87/28,839.54
  6. Step 6: Final answer
    x = 29,314.37

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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.