Home / 13,919.08-19,213.86-8,329

Finding the Fourth Proportional to 13,919.08, 19,213.86 and 8,329

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Solution

The fourth proportional to 13,919.08, 19,213.86 and 8,329 is: 11,497.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,919.08 : 19,213.86 = 8,329 : x
  2. Step 2: Convert to fraction form
    13,919.08/19,213.86 = 8,329/x
  3. Step 3: Cross multiply
    13,919.08x = 19,213.86 × 8,329
  4. Step 4: Simplify right side
    13,919.08x = 160,032,239.94
  5. Step 5: Solve for x
    x = 160,032,239.94/13,919.08
  6. Step 6: Final answer
    x = 11,497.33

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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.