Home / 39,845.04-54,987.60-21,941.28

Finding the Fourth Proportional to 39,845.04, 54,987.60 and 21,941.28

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Solution

The fourth proportional to 39,845.04, 54,987.60 and 21,941.28 is: 30,279.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,845.04 : 54,987.60 = 21,941.28 : x
  2. Step 2: Convert to fraction form
    39,845.04/54,987.60 = 21,941.28/x
  3. Step 3: Cross multiply
    39,845.04x = 54,987.60 × 21,941.28
  4. Step 4: Simplify right side
    39,845.04x = 1,206,498,328.13
  5. Step 5: Solve for x
    x = 1,206,498,328.13/39,845.04
  6. Step 6: Final answer
    x = 30,279.76

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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.