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Finding the Fourth Proportional to 19,240.76, 28,860.46 and 7,391.48

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Solution

The fourth proportional to 19,240.76, 28,860.46 and 7,391.48 is: 11,086.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,240.76 : 28,860.46 = 7,391.48 : x
  2. Step 2: Convert to fraction form
    19,240.76/28,860.46 = 7,391.48/x
  3. Step 3: Cross multiply
    19,240.76x = 28,860.46 × 7,391.48
  4. Step 4: Simplify right side
    19,240.76x = 213,321,512.88
  5. Step 5: Solve for x
    x = 213,321,512.88/19,240.76
  6. Step 6: Final answer
    x = 11,086.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.