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Finding the Fourth Proportional to 38,326.89, 52,891.10 and 21,559.89

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Solution

The fourth proportional to 38,326.89, 52,891.10 and 21,559.89 is: 29,752.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,326.89 : 52,891.10 = 21,559.89 : x
  2. Step 2: Convert to fraction form
    38,326.89/52,891.10 = 21,559.89/x
  3. Step 3: Cross multiply
    38,326.89x = 52,891.10 × 21,559.89
  4. Step 4: Simplify right side
    38,326.89x = 1,140,326,190.18
  5. Step 5: Solve for x
    x = 1,140,326,190.18/38,326.89
  6. Step 6: Final answer
    x = 29,752.64

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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.