Home / 11,885.15-16,400.90-6,579.86

Finding the Fourth Proportional to 11,885.15, 16,400.90 and 6,579.86

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Solution

The fourth proportional to 11,885.15, 16,400.90 and 6,579.86 is: 9,079.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,885.15 : 16,400.90 = 6,579.86 : x
  2. Step 2: Convert to fraction form
    11,885.15/16,400.90 = 6,579.86/x
  3. Step 3: Cross multiply
    11,885.15x = 16,400.90 × 6,579.86
  4. Step 4: Simplify right side
    11,885.15x = 107,915,560.32
  5. Step 5: Solve for x
    x = 107,915,560.32/11,885.15
  6. Step 6: Final answer
    x = 9,079.86

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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.