Home / 39,342.99-54,293.33-21,438

Finding the Fourth Proportional to 39,342.99, 54,293.33 and 21,438

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Solution

The fourth proportional to 39,342.99, 54,293.33 and 21,438 is: 29,584.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,342.99 : 54,293.33 = 21,438 : x
  2. Step 2: Convert to fraction form
    39,342.99/54,293.33 = 21,438/x
  3. Step 3: Cross multiply
    39,342.99x = 54,293.33 × 21,438
  4. Step 4: Simplify right side
    39,342.99x = 1,163,940,301.35
  5. Step 5: Solve for x
    x = 1,163,940,301.35/39,342.99
  6. Step 6: Final answer
    x = 29,584.44

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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.