Home / 39,519.28-54,537.78-21,613.96

Finding the Fourth Proportional to 39,519.28, 54,537.78 and 21,613.96

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Solution

The fourth proportional to 39,519.28, 54,537.78 and 21,613.96 is: 29,827.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,519.28 : 54,537.78 = 21,613.96 : x
  2. Step 2: Convert to fraction form
    39,519.28/54,537.78 = 21,613.96/x
  3. Step 3: Cross multiply
    39,519.28x = 54,537.78 × 21,613.96
  4. Step 4: Simplify right side
    39,519.28x = 1,178,777,395.41
  5. Step 5: Solve for x
    x = 1,178,777,395.41/39,519.28
  6. Step 6: Final answer
    x = 29,827.91

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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.