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Finding the Fourth Proportional to 43,379.70, 65,057.40 and 13,806.60

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Solution

The fourth proportional to 43,379.70, 65,057.40 and 13,806.60 is: 20,706.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,379.70 : 65,057.40 = 13,806.60 : x
  2. Step 2: Convert to fraction form
    43,379.70/65,057.40 = 13,806.60/x
  3. Step 3: Cross multiply
    43,379.70x = 65,057.40 × 13,806.60
  4. Step 4: Simplify right side
    43,379.70x = 898,221,498.84
  5. Step 5: Solve for x
    x = 898,221,498.84/43,379.70
  6. Step 6: Final answer
    x = 20,706.03

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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.