Home / 39,847.20-54,985.68-21,941.88

Finding the Fourth Proportional to 39,847.20, 54,985.68 and 21,941.88

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Solution

The fourth proportional to 39,847.20, 54,985.68 and 21,941.88 is: 30,277.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,847.20 : 54,985.68 = 21,941.88 : x
  2. Step 2: Convert to fraction form
    39,847.20/54,985.68 = 21,941.88/x
  3. Step 3: Cross multiply
    39,847.20x = 54,985.68 × 21,941.88
  4. Step 4: Simplify right side
    39,847.20x = 1,206,489,192.28
  5. Step 5: Solve for x
    x = 1,206,489,192.28/39,847.20
  6. Step 6: Final answer
    x = 30,277.89

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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.