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Finding the Fourth Proportional to 20,493.41, 30,754.71 and 15,818.09

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Solution

The fourth proportional to 20,493.41, 30,754.71 and 15,818.09 is: 23,738.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,493.41 : 30,754.71 = 15,818.09 : x
  2. Step 2: Convert to fraction form
    20,493.41/30,754.71 = 15,818.09/x
  3. Step 3: Cross multiply
    20,493.41x = 30,754.71 × 15,818.09
  4. Step 4: Simplify right side
    20,493.41x = 486,480,616.93
  5. Step 5: Solve for x
    x = 486,480,616.93/20,493.41
  6. Step 6: Final answer
    x = 23,738.40

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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.