Home / 39,723.88-54,818.92-21,820.02

Finding the Fourth Proportional to 39,723.88, 54,818.92 and 21,820.02

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Solution

The fourth proportional to 39,723.88, 54,818.92 and 21,820.02 is: 30,111.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,723.88 : 54,818.92 = 21,820.02 : x
  2. Step 2: Convert to fraction form
    39,723.88/54,818.92 = 21,820.02/x
  3. Step 3: Cross multiply
    39,723.88x = 54,818.92 × 21,820.02
  4. Step 4: Simplify right side
    39,723.88x = 1,196,149,930.78
  5. Step 5: Solve for x
    x = 1,196,149,930.78/39,723.88
  6. Step 6: Final answer
    x = 30,111.61

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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.