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Finding the Fourth Proportional to 37,658.60, 51,968.94 and 20,891.60

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Solution

The fourth proportional to 37,658.60, 51,968.94 and 20,891.60 is: 28,830.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,658.60 : 51,968.94 = 20,891.60 : x
  2. Step 2: Convert to fraction form
    37,658.60/51,968.94 = 20,891.60/x
  3. Step 3: Cross multiply
    37,658.60x = 51,968.94 × 20,891.60
  4. Step 4: Simplify right side
    37,658.60x = 1,085,714,306.90
  5. Step 5: Solve for x
    x = 1,085,714,306.90/37,658.60
  6. Step 6: Final answer
    x = 28,830.45

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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.