Home / 39,572.31-54,609.80-21,668.45

Finding the Fourth Proportional to 39,572.31, 54,609.80 and 21,668.45

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Solution

The fourth proportional to 39,572.31, 54,609.80 and 21,668.45 is: 29,902.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,572.31 : 54,609.80 = 21,668.45 : x
  2. Step 2: Convert to fraction form
    39,572.31/54,609.80 = 21,668.45/x
  3. Step 3: Cross multiply
    39,572.31x = 54,609.80 × 21,668.45
  4. Step 4: Simplify right side
    39,572.31x = 1,183,309,339.42
  5. Step 5: Solve for x
    x = 1,183,309,339.42/39,572.31
  6. Step 6: Final answer
    x = 29,902.46

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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.