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Finding the Fourth Proportional to 43,909.68, 65,866.68 and 12,747.36

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Solution

The fourth proportional to 43,909.68, 65,866.68 and 12,747.36 is: 19,121.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,909.68 : 65,866.68 = 12,747.36 : x
  2. Step 2: Convert to fraction form
    43,909.68/65,866.68 = 12,747.36/x
  3. Step 3: Cross multiply
    43,909.68x = 65,866.68 × 12,747.36
  4. Step 4: Simplify right side
    43,909.68x = 839,626,281.96
  5. Step 5: Solve for x
    x = 839,626,281.96/43,909.68
  6. Step 6: Final answer
    x = 19,121.67

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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.