Home / 13,675.33-20,405.66-12,839.41

Finding the Fourth Proportional to 13,675.33, 20,405.66 and 12,839.41

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Solution

The fourth proportional to 13,675.33, 20,405.66 and 12,839.41 is: 19,158.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,675.33 : 20,405.66 = 12,839.41 : x
  2. Step 2: Convert to fraction form
    13,675.33/20,405.66 = 12,839.41/x
  3. Step 3: Cross multiply
    13,675.33x = 20,405.66 × 12,839.41
  4. Step 4: Simplify right side
    13,675.33x = 261,996,635.06
  5. Step 5: Solve for x
    x = 261,996,635.06/13,675.33
  6. Step 6: Final answer
    x = 19,158.34

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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.