Home / 11,181.12-15,429.61-6,400.90

Finding the Fourth Proportional to 11,181.12, 15,429.61 and 6,400.90

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Solution

The fourth proportional to 11,181.12, 15,429.61 and 6,400.90 is: 8,833.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,181.12 : 15,429.61 = 6,400.90 : x
  2. Step 2: Convert to fraction form
    11,181.12/15,429.61 = 6,400.90/x
  3. Step 3: Cross multiply
    11,181.12x = 15,429.61 × 6,400.90
  4. Step 4: Simplify right side
    11,181.12x = 98,763,406.65
  5. Step 5: Solve for x
    x = 98,763,406.65/11,181.12
  6. Step 6: Final answer
    x = 8,833.06

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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.