Home / 39,845.16-54,987.39-21,941.28

Finding the Fourth Proportional to 39,845.16, 54,987.39 and 21,941.28

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Solution

The fourth proportional to 39,845.16, 54,987.39 and 21,941.28 is: 30,279.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,845.16 : 54,987.39 = 21,941.28 : x
  2. Step 2: Convert to fraction form
    39,845.16/54,987.39 = 21,941.28/x
  3. Step 3: Cross multiply
    39,845.16x = 54,987.39 × 21,941.28
  4. Step 4: Simplify right side
    39,845.16x = 1,206,493,720.46
  5. Step 5: Solve for x
    x = 1,206,493,720.46/39,845.16
  6. Step 6: Final answer
    x = 30,279.56

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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.