Home / 20,512.05-30,768.08-16,818.45

Finding the Fourth Proportional to 20,512.05, 30,768.08 and 16,818.45

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Solution

The fourth proportional to 20,512.05, 30,768.08 and 16,818.45 is: 25,227.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,512.05 : 30,768.08 = 16,818.45 : x
  2. Step 2: Convert to fraction form
    20,512.05/30,768.08 = 16,818.45/x
  3. Step 3: Cross multiply
    20,512.05x = 30,768.08 × 16,818.45
  4. Step 4: Simplify right side
    20,512.05x = 517,471,330.98
  5. Step 5: Solve for x
    x = 517,471,330.98/20,512.05
  6. Step 6: Final answer
    x = 25,227.68

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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.