Home / 13,942.32-19,249.42-8,642.76

Finding the Fourth Proportional to 13,942.32, 19,249.42 and 8,642.76

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Solution

The fourth proportional to 13,942.32, 19,249.42 and 8,642.76 is: 11,932.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,942.32 : 19,249.42 = 8,642.76 : x
  2. Step 2: Convert to fraction form
    13,942.32/19,249.42 = 8,642.76/x
  3. Step 3: Cross multiply
    13,942.32x = 19,249.42 × 8,642.76
  4. Step 4: Simplify right side
    13,942.32x = 166,368,117.20
  5. Step 5: Solve for x
    x = 166,368,117.20/13,942.32
  6. Step 6: Final answer
    x = 11,932.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.