Home / 13,446.36-20,139.84-13,115.88

Finding the Fourth Proportional to 13,446.36, 20,139.84 and 13,115.88

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Solution

The fourth proportional to 13,446.36, 20,139.84 and 13,115.88 is: 19,644.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,446.36 : 20,139.84 = 13,115.88 : x
  2. Step 2: Convert to fraction form
    13,446.36/20,139.84 = 13,115.88/x
  3. Step 3: Cross multiply
    13,446.36x = 20,139.84 × 13,115.88
  4. Step 4: Simplify right side
    13,446.36x = 264,151,724.66
  5. Step 5: Solve for x
    x = 264,151,724.66/13,446.36
  6. Step 6: Final answer
    x = 19,644.85

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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.