Home / 39,729.89-54,827.28-21,826.06

Finding the Fourth Proportional to 39,729.89, 54,827.28 and 21,826.06

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Solution

The fourth proportional to 39,729.89, 54,827.28 and 21,826.06 is: 30,119.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,729.89 : 54,827.28 = 21,826.06 : x
  2. Step 2: Convert to fraction form
    39,729.89/54,827.28 = 21,826.06/x
  3. Step 3: Cross multiply
    39,729.89x = 54,827.28 × 21,826.06
  4. Step 4: Simplify right side
    39,729.89x = 1,196,663,365.85
  5. Step 5: Solve for x
    x = 1,196,663,365.85/39,729.89
  6. Step 6: Final answer
    x = 30,119.97

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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.