Home / 11,816.20-16,306.20-6,438.58

Finding the Fourth Proportional to 11,816.20, 16,306.20 and 6,438.58

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Solution

The fourth proportional to 11,816.20, 16,306.20 and 6,438.58 is: 8,885.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,816.20 : 16,306.20 = 6,438.58 : x
  2. Step 2: Convert to fraction form
    11,816.20/16,306.20 = 6,438.58/x
  3. Step 3: Cross multiply
    11,816.20x = 16,306.20 × 6,438.58
  4. Step 4: Simplify right side
    11,816.20x = 104,988,773.20
  5. Step 5: Solve for x
    x = 104,988,773.20/11,816.20
  6. Step 6: Final answer
    x = 8,885.16

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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.