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Finding the Fourth Proportional to 20,351.70, 30,527.55 and 14,446.80

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Solution

The fourth proportional to 20,351.70, 30,527.55 and 14,446.80 is: 21,670.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,351.70 : 30,527.55 = 14,446.80 : x
  2. Step 2: Convert to fraction form
    20,351.70/30,527.55 = 14,446.80/x
  3. Step 3: Cross multiply
    20,351.70x = 30,527.55 × 14,446.80
  4. Step 4: Simplify right side
    20,351.70x = 441,025,409.34
  5. Step 5: Solve for x
    x = 441,025,409.34/20,351.70
  6. Step 6: Final answer
    x = 21,670.20

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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.