Home / 39,195.76-54,091.16-21,291.79

Finding the Fourth Proportional to 39,195.76, 54,091.16 and 21,291.79

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Solution

The fourth proportional to 39,195.76, 54,091.16 and 21,291.79 is: 29,383.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,195.76 : 54,091.16 = 21,291.79 : x
  2. Step 2: Convert to fraction form
    39,195.76/54,091.16 = 21,291.79/x
  3. Step 3: Cross multiply
    39,195.76x = 54,091.16 × 21,291.79
  4. Step 4: Simplify right side
    39,195.76x = 1,151,697,619.58
  5. Step 5: Solve for x
    x = 1,151,697,619.58/39,195.76
  6. Step 6: Final answer
    x = 29,383.22

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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.