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Finding the Fourth Proportional to 14,703.68, 20,286.48 and 8,414.84

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Solution

The fourth proportional to 14,703.68, 20,286.48 and 8,414.84 is: 11,609.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,703.68 : 20,286.48 = 8,414.84 : x
  2. Step 2: Convert to fraction form
    14,703.68/20,286.48 = 8,414.84/x
  3. Step 3: Cross multiply
    14,703.68x = 20,286.48 × 8,414.84
  4. Step 4: Simplify right side
    14,703.68x = 170,707,483.36
  5. Step 5: Solve for x
    x = 170,707,483.36/14,703.68
  6. Step 6: Final answer
    x = 11,609.85

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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.