Home / 13,912.12-20,744.09-12,366.64

Finding the Fourth Proportional to 13,912.12, 20,744.09 and 12,366.64

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Solution

The fourth proportional to 13,912.12, 20,744.09 and 12,366.64 is: 18,439.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,912.12 : 20,744.09 = 12,366.64 : x
  2. Step 2: Convert to fraction form
    13,912.12/20,744.09 = 12,366.64/x
  3. Step 3: Cross multiply
    13,912.12x = 20,744.09 × 12,366.64
  4. Step 4: Simplify right side
    13,912.12x = 256,534,693.16
  5. Step 5: Solve for x
    x = 256,534,693.16/13,912.12
  6. Step 6: Final answer
    x = 18,439.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.