Home / 39,659.24-54,729.36-21,753.92

Finding the Fourth Proportional to 39,659.24, 54,729.36 and 21,753.92

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Solution

The fourth proportional to 39,659.24, 54,729.36 and 21,753.92 is: 30,020.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,659.24 : 54,729.36 = 21,753.92 : x
  2. Step 2: Convert to fraction form
    39,659.24/54,729.36 = 21,753.92/x
  3. Step 3: Cross multiply
    39,659.24x = 54,729.36 × 21,753.92
  4. Step 4: Simplify right side
    39,659.24x = 1,190,578,119.09
  5. Step 5: Solve for x
    x = 1,190,578,119.09/39,659.24
  6. Step 6: Final answer
    x = 30,020.20

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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.