Home / 11,920.80-16,451.46-6,885.95

Finding the Fourth Proportional to 11,920.80, 16,451.46 and 6,885.95

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Solution

The fourth proportional to 11,920.80, 16,451.46 and 6,885.95 is: 9,503.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,920.80 : 16,451.46 = 6,885.95 : x
  2. Step 2: Convert to fraction form
    11,920.80/16,451.46 = 6,885.95/x
  3. Step 3: Cross multiply
    11,920.80x = 16,451.46 × 6,885.95
  4. Step 4: Simplify right side
    11,920.80x = 113,283,822.91
  5. Step 5: Solve for x
    x = 113,283,822.91/11,920.80
  6. Step 6: Final answer
    x = 9,503.04

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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.