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Finding the Fourth Proportional to 13,527.70, 20,289.04 and 3,665.70

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Solution

The fourth proportional to 13,527.70, 20,289.04 and 3,665.70 is: 5,497.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,527.70 : 20,289.04 = 3,665.70 : x
  2. Step 2: Convert to fraction form
    13,527.70/20,289.04 = 3,665.70/x
  3. Step 3: Cross multiply
    13,527.70x = 20,289.04 × 3,665.70
  4. Step 4: Simplify right side
    13,527.70x = 74,373,524.76
  5. Step 5: Solve for x
    x = 74,373,524.76/13,527.70
  6. Step 6: Final answer
    x = 5,497.87

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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.