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Finding the Fourth Proportional to 20,351.60, 30,462.60 and 14,519.60

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Solution

The fourth proportional to 20,351.60, 30,462.60 and 14,519.60 is: 21,733.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,351.60 : 30,462.60 = 14,519.60 : x
  2. Step 2: Convert to fraction form
    20,351.60/30,462.60 = 14,519.60/x
  3. Step 3: Cross multiply
    20,351.60x = 30,462.60 × 14,519.60
  4. Step 4: Simplify right side
    20,351.60x = 442,304,766.96
  5. Step 5: Solve for x
    x = 442,304,766.96/20,351.60
  6. Step 6: Final answer
    x = 21,733.17

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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.