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Finding the Fourth Proportional to 20,614.40, 30,926.39 and 8,768.82

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Solution

The fourth proportional to 20,614.40, 30,926.39 and 8,768.82 is: 13,155.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,614.40 : 30,926.39 = 8,768.82 : x
  2. Step 2: Convert to fraction form
    20,614.40/30,926.39 = 8,768.82/x
  3. Step 3: Cross multiply
    20,614.40x = 30,926.39 × 8,768.82
  4. Step 4: Simplify right side
    20,614.40x = 271,187,903.32
  5. Step 5: Solve for x
    x = 271,187,903.32/20,614.40
  6. Step 6: Final answer
    x = 13,155.27

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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.