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Finding the Fourth Proportional to 29,709.80, 44,564.70 and 20,378.60

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Solution

The fourth proportional to 29,709.80, 44,564.70 and 20,378.60 is: 30,567.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,709.80 : 44,564.70 = 20,378.60 : x
  2. Step 2: Convert to fraction form
    29,709.80/44,564.70 = 20,378.60/x
  3. Step 3: Cross multiply
    29,709.80x = 44,564.70 × 20,378.60
  4. Step 4: Simplify right side
    29,709.80x = 908,166,195.42
  5. Step 5: Solve for x
    x = 908,166,195.42/29,709.80
  6. Step 6: Final answer
    x = 30,567.90

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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.