Home / 39,656.40-54,725-21,751.44

Finding the Fourth Proportional to 39,656.40, 54,725 and 21,751.44

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Solution

The fourth proportional to 39,656.40, 54,725 and 21,751.44 is: 30,016.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,656.40 : 54,725 = 21,751.44 : x
  2. Step 2: Convert to fraction form
    39,656.40/54,725 = 21,751.44/x
  3. Step 3: Cross multiply
    39,656.40x = 54,725 × 21,751.44
  4. Step 4: Simplify right side
    39,656.40x = 1,190,347,554
  5. Step 5: Solve for x
    x = 1,190,347,554/39,656.40
  6. Step 6: Final answer
    x = 30,016.53

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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.