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Finding the Fourth Proportional to 14,684.51, 20,265.62 and 8,311.10

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Solution

The fourth proportional to 14,684.51, 20,265.62 and 8,311.10 is: 11,469.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,684.51 : 20,265.62 = 8,311.10 : x
  2. Step 2: Convert to fraction form
    14,684.51/20,265.62 = 8,311.10/x
  3. Step 3: Cross multiply
    14,684.51x = 20,265.62 × 8,311.10
  4. Step 4: Simplify right side
    14,684.51x = 168,429,451.50
  5. Step 5: Solve for x
    x = 168,429,451.50/14,684.51
  6. Step 6: Final answer
    x = 11,469.87

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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.