Home / 39,615.88-54,669.92-21,710.72

Finding the Fourth Proportional to 39,615.88, 54,669.92 and 21,710.72

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Solution

The fourth proportional to 39,615.88, 54,669.92 and 21,710.72 is: 29,960.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,615.88 : 54,669.92 = 21,710.72 : x
  2. Step 2: Convert to fraction form
    39,615.88/54,669.92 = 21,710.72/x
  3. Step 3: Cross multiply
    39,615.88x = 54,669.92 × 21,710.72
  4. Step 4: Simplify right side
    39,615.88x = 1,186,923,325.54
  5. Step 5: Solve for x
    x = 1,186,923,325.54/39,615.88
  6. Step 6: Final answer
    x = 29,960.80

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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.