Home / 39,782.12-54,897.26-21,876.66

Finding the Fourth Proportional to 39,782.12, 54,897.26 and 21,876.66

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Solution

The fourth proportional to 39,782.12, 54,897.26 and 21,876.66 is: 30,188.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,782.12 : 54,897.26 = 21,876.66 : x
  2. Step 2: Convert to fraction form
    39,782.12/54,897.26 = 21,876.66/x
  3. Step 3: Cross multiply
    39,782.12x = 54,897.26 × 21,876.66
  4. Step 4: Simplify right side
    39,782.12x = 1,200,968,582.57
  5. Step 5: Solve for x
    x = 1,200,968,582.57/39,782.12
  6. Step 6: Final answer
    x = 30,188.66

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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.