Home / 11,816.62-16,306.94-6,439.02

Finding the Fourth Proportional to 11,816.62, 16,306.94 and 6,439.02

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Solution

The fourth proportional to 11,816.62, 16,306.94 and 6,439.02 is: 8,885.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,816.62 : 16,306.94 = 6,439.02 : x
  2. Step 2: Convert to fraction form
    11,816.62/16,306.94 = 6,439.02/x
  3. Step 3: Cross multiply
    11,816.62x = 16,306.94 × 6,439.02
  4. Step 4: Simplify right side
    11,816.62x = 105,000,712.80
  5. Step 5: Solve for x
    x = 105,000,712.80/11,816.62
  6. Step 6: Final answer
    x = 8,885.85

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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.