Home / 39,359.22-54,315.40-21,453.90

Finding the Fourth Proportional to 39,359.22, 54,315.40 and 21,453.90

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Solution

The fourth proportional to 39,359.22, 54,315.40 and 21,453.90 is: 29,606.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,359.22 : 54,315.40 = 21,453.90 : x
  2. Step 2: Convert to fraction form
    39,359.22/54,315.40 = 21,453.90/x
  3. Step 3: Cross multiply
    39,359.22x = 54,315.40 × 21,453.90
  4. Step 4: Simplify right side
    39,359.22x = 1,165,277,160.06
  5. Step 5: Solve for x
    x = 1,165,277,160.06/39,359.22
  6. Step 6: Final answer
    x = 29,606.21

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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.