Home / 39,871.06-55,023.48-21,967.43

Finding the Fourth Proportional to 39,871.06, 55,023.48 and 21,967.43

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Solution

The fourth proportional to 39,871.06, 55,023.48 and 21,967.43 is: 30,315.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,871.06 : 55,023.48 = 21,967.43 : x
  2. Step 2: Convert to fraction form
    39,871.06/55,023.48 = 21,967.43/x
  3. Step 3: Cross multiply
    39,871.06x = 55,023.48 × 21,967.43
  4. Step 4: Simplify right side
    39,871.06x = 1,208,724,170.14
  5. Step 5: Solve for x
    x = 1,208,724,170.14/39,871.06
  6. Step 6: Final answer
    x = 30,315.83

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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.