Home / 11,416.13-15,755.75-6,381.39

Finding the Fourth Proportional to 11,416.13, 15,755.75 and 6,381.39

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Solution

The fourth proportional to 11,416.13, 15,755.75 and 6,381.39 is: 8,807.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,416.13 : 15,755.75 = 6,381.39 : x
  2. Step 2: Convert to fraction form
    11,416.13/15,755.75 = 6,381.39/x
  3. Step 3: Cross multiply
    11,416.13x = 15,755.75 × 6,381.39
  4. Step 4: Simplify right side
    11,416.13x = 100,543,553.59
  5. Step 5: Solve for x
    x = 100,543,553.59/11,416.13
  6. Step 6: Final answer
    x = 8,807.15

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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.