Home / 39,485.37-54,489.91-21,580.59

Finding the Fourth Proportional to 39,485.37, 54,489.91 and 21,580.59

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Solution

The fourth proportional to 39,485.37, 54,489.91 and 21,580.59 is: 29,781.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,485.37 : 54,489.91 = 21,580.59 : x
  2. Step 2: Convert to fraction form
    39,485.37/54,489.91 = 21,580.59/x
  3. Step 3: Cross multiply
    39,485.37x = 54,489.91 × 21,580.59
  4. Step 4: Simplify right side
    39,485.37x = 1,175,924,406.85
  5. Step 5: Solve for x
    x = 1,175,924,406.85/39,485.37
  6. Step 6: Final answer
    x = 29,781.27

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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.