Home / 11,186.55-15,435.75-6,405.75

Finding the Fourth Proportional to 11,186.55, 15,435.75 and 6,405.75

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Solution

The fourth proportional to 11,186.55, 15,435.75 and 6,405.75 is: 8,838.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,186.55 : 15,435.75 = 6,405.75 : x
  2. Step 2: Convert to fraction form
    11,186.55/15,435.75 = 6,405.75/x
  3. Step 3: Cross multiply
    11,186.55x = 15,435.75 × 6,405.75
  4. Step 4: Simplify right side
    11,186.55x = 98,877,555.56
  5. Step 5: Solve for x
    x = 98,877,555.56/11,186.55
  6. Step 6: Final answer
    x = 8,838.97

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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.