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Finding the Fourth Proportional to 37,540.80, 51,806.40 and 20,774.40

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Solution

The fourth proportional to 37,540.80, 51,806.40 and 20,774.40 is: 28,668.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,540.80 : 51,806.40 = 20,774.40 : x
  2. Step 2: Convert to fraction form
    37,540.80/51,806.40 = 20,774.40/x
  3. Step 3: Cross multiply
    37,540.80x = 51,806.40 × 20,774.40
  4. Step 4: Simplify right side
    37,540.80x = 1,076,246,876.16
  5. Step 5: Solve for x
    x = 1,076,246,876.16/37,540.80
  6. Step 6: Final answer
    x = 28,668.73

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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.