Home / 43,679.12-65,507.32-12,507.12

Finding the Fourth Proportional to 43,679.12, 65,507.32 and 12,507.12

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Solution

The fourth proportional to 43,679.12, 65,507.32 and 12,507.12 is: 18,757.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,679.12 : 65,507.32 = 12,507.12 : x
  2. Step 2: Convert to fraction form
    43,679.12/65,507.32 = 12,507.12/x
  3. Step 3: Cross multiply
    43,679.12x = 65,507.32 × 12,507.12
  4. Step 4: Simplify right side
    43,679.12x = 819,307,912.12
  5. Step 5: Solve for x
    x = 819,307,912.12/43,679.12
  6. Step 6: Final answer
    x = 18,757.43

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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.