Home / 28,871.06-39,842.19-15,623.06

Finding the Fourth Proportional to 28,871.06, 39,842.19 and 15,623.06

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Solution

The fourth proportional to 28,871.06, 39,842.19 and 15,623.06 is: 21,559.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,871.06 : 39,842.19 = 15,623.06 : x
  2. Step 2: Convert to fraction form
    28,871.06/39,842.19 = 15,623.06/x
  3. Step 3: Cross multiply
    28,871.06x = 39,842.19 × 15,623.06
  4. Step 4: Simplify right side
    28,871.06x = 622,456,965.92
  5. Step 5: Solve for x
    x = 622,456,965.92/28,871.06
  6. Step 6: Final answer
    x = 21,559.89

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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.