Home / 12,815.12-19,115.02-11,633.96

Finding the Fourth Proportional to 12,815.12, 19,115.02 and 11,633.96

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Solution

The fourth proportional to 12,815.12, 19,115.02 and 11,633.96 is: 17,353.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,815.12 : 19,115.02 = 11,633.96 : x
  2. Step 2: Convert to fraction form
    12,815.12/19,115.02 = 11,633.96/x
  3. Step 3: Cross multiply
    12,815.12x = 19,115.02 × 11,633.96
  4. Step 4: Simplify right side
    12,815.12x = 222,383,378.08
  5. Step 5: Solve for x
    x = 222,383,378.08/12,815.12
  6. Step 6: Final answer
    x = 17,353.20

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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.