Home / 14,992.88-20,690.21-8,278.55

Finding the Fourth Proportional to 14,992.88, 20,690.21 and 8,278.55

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Solution

The fourth proportional to 14,992.88, 20,690.21 and 8,278.55 is: 11,424.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,992.88 : 20,690.21 = 8,278.55 : x
  2. Step 2: Convert to fraction form
    14,992.88/20,690.21 = 8,278.55/x
  3. Step 3: Cross multiply
    14,992.88x = 20,690.21 × 8,278.55
  4. Step 4: Simplify right side
    14,992.88x = 171,284,855.24
  5. Step 5: Solve for x
    x = 171,284,855.24/14,992.88
  6. Step 6: Final answer
    x = 11,424.42

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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.