Home / 39,756.36-54,864.34-21,853.02

Finding the Fourth Proportional to 39,756.36, 54,864.34 and 21,853.02

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Solution

The fourth proportional to 39,756.36, 54,864.34 and 21,853.02 is: 30,157.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,756.36 : 54,864.34 = 21,853.02 : x
  2. Step 2: Convert to fraction form
    39,756.36/54,864.34 = 21,853.02/x
  3. Step 3: Cross multiply
    39,756.36x = 54,864.34 × 21,853.02
  4. Step 4: Simplify right side
    39,756.36x = 1,198,951,519.31
  5. Step 5: Solve for x
    x = 1,198,951,519.31/39,756.36
  6. Step 6: Final answer
    x = 30,157.48

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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.