Home / 11,816.13-16,306.07-6,438.64

Finding the Fourth Proportional to 11,816.13, 16,306.07 and 6,438.64

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Solution

The fourth proportional to 11,816.13, 16,306.07 and 6,438.64 is: 8,885.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,816.13 : 16,306.07 = 6,438.64 : x
  2. Step 2: Convert to fraction form
    11,816.13/16,306.07 = 6,438.64/x
  3. Step 3: Cross multiply
    11,816.13x = 16,306.07 × 6,438.64
  4. Step 4: Simplify right side
    11,816.13x = 104,988,859.30
  5. Step 5: Solve for x
    x = 104,988,859.30/11,816.13
  6. Step 6: Final answer
    x = 8,885.21

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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.