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Finding the Fourth Proportional to 37,404, 51,618.24 and 20,636.64

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Solution

The fourth proportional to 37,404, 51,618.24 and 20,636.64 is: 28,478.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,404 : 51,618.24 = 20,636.64 : x
  2. Step 2: Convert to fraction form
    37,404/51,618.24 = 20,636.64/x
  3. Step 3: Cross multiply
    37,404x = 51,618.24 × 20,636.64
  4. Step 4: Simplify right side
    37,404x = 1,065,227,036.31
  5. Step 5: Solve for x
    x = 1,065,227,036.31/37,404
  6. Step 6: Final answer
    x = 28,478.96

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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.