Home / 11,687.22-16,128.27-6,381.99

Finding the Fourth Proportional to 11,687.22, 16,128.27 and 6,381.99

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Solution

The fourth proportional to 11,687.22, 16,128.27 and 6,381.99 is: 8,807.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,687.22 : 16,128.27 = 6,381.99 : x
  2. Step 2: Convert to fraction form
    11,687.22/16,128.27 = 6,381.99/x
  3. Step 3: Cross multiply
    11,687.22x = 16,128.27 × 6,381.99
  4. Step 4: Simplify right side
    11,687.22x = 102,930,457.86
  5. Step 5: Solve for x
    x = 102,930,457.86/11,687.22
  6. Step 6: Final answer
    x = 8,807.10

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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.