Home / 11,181.56-15,431.48-7,210.96

Finding the Fourth Proportional to 11,181.56, 15,431.48 and 7,210.96

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Solution

The fourth proportional to 11,181.56, 15,431.48 and 7,210.96 is: 9,951.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,181.56 : 15,431.48 = 7,210.96 : x
  2. Step 2: Convert to fraction form
    11,181.56/15,431.48 = 7,210.96/x
  3. Step 3: Cross multiply
    11,181.56x = 15,431.48 × 7,210.96
  4. Step 4: Simplify right side
    11,181.56x = 111,275,785.02
  5. Step 5: Solve for x
    x = 111,275,785.02/11,181.56
  6. Step 6: Final answer
    x = 9,951.72

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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.