Home / 39,845.36-54,987.96-21,941.60

Finding the Fourth Proportional to 39,845.36, 54,987.96 and 21,941.60

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Solution

The fourth proportional to 39,845.36, 54,987.96 and 21,941.60 is: 30,280.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,845.36 : 54,987.96 = 21,941.60 : x
  2. Step 2: Convert to fraction form
    39,845.36/54,987.96 = 21,941.60/x
  3. Step 3: Cross multiply
    39,845.36x = 54,987.96 × 21,941.60
  4. Step 4: Simplify right side
    39,845.36x = 1,206,523,823.14
  5. Step 5: Solve for x
    x = 1,206,523,823.14/39,845.36
  6. Step 6: Final answer
    x = 30,280.16

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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.