Home / 39,659.99-54,729.84-21,754.83

Finding the Fourth Proportional to 39,659.99, 54,729.84 and 21,754.83

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Solution

The fourth proportional to 39,659.99, 54,729.84 and 21,754.83 is: 30,021.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,659.99 : 54,729.84 = 21,754.83 : x
  2. Step 2: Convert to fraction form
    39,659.99/54,729.84 = 21,754.83/x
  3. Step 3: Cross multiply
    39,659.99x = 54,729.84 × 21,754.83
  4. Step 4: Simplify right side
    39,659.99x = 1,190,638,365.13
  5. Step 5: Solve for x
    x = 1,190,638,365.13/39,659.99
  6. Step 6: Final answer
    x = 30,021.15

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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.