Home / 39,778.04-54,893.70-21,874.25

Finding the Fourth Proportional to 39,778.04, 54,893.70 and 21,874.25

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Solution

The fourth proportional to 39,778.04, 54,893.70 and 21,874.25 is: 30,186.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,778.04 : 54,893.70 = 21,874.25 : x
  2. Step 2: Convert to fraction form
    39,778.04/54,893.70 = 21,874.25/x
  3. Step 3: Cross multiply
    39,778.04x = 54,893.70 × 21,874.25
  4. Step 4: Simplify right side
    39,778.04x = 1,200,758,654.46
  5. Step 5: Solve for x
    x = 1,200,758,654.46/39,778.04
  6. Step 6: Final answer
    x = 30,186.47

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1.5x scale

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.