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Finding the Fourth Proportional to 37,644.80, 51,949.91 and 20,649.20

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Solution

The fourth proportional to 37,644.80, 51,949.91 and 20,649.20 is: 28,495.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,644.80 : 51,949.91 = 20,649.20 : x
  2. Step 2: Convert to fraction form
    37,644.80/51,949.91 = 20,649.20/x
  3. Step 3: Cross multiply
    37,644.80x = 51,949.91 × 20,649.20
  4. Step 4: Simplify right side
    37,644.80x = 1,072,723,978.33
  5. Step 5: Solve for x
    x = 1,072,723,978.33/37,644.80
  6. Step 6: Final answer
    x = 28,495.94

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1.5x scale

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.