Home / 11,922.40-16,449.32-6,884.78

Finding the Fourth Proportional to 11,922.40, 16,449.32 and 6,884.78

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Solution

The fourth proportional to 11,922.40, 16,449.32 and 6,884.78 is: 9,498.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,922.40 : 16,449.32 = 6,884.78 : x
  2. Step 2: Convert to fraction form
    11,922.40/16,449.32 = 6,884.78/x
  3. Step 3: Cross multiply
    11,922.40x = 16,449.32 × 6,884.78
  4. Step 4: Simplify right side
    11,922.40x = 113,249,893.74
  5. Step 5: Solve for x
    x = 113,249,893.74/11,922.40
  6. Step 6: Final answer
    x = 9,498.92

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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.