Home / 11,131.12-15,358.64-6,653.20

Finding the Fourth Proportional to 11,131.12, 15,358.64 and 6,653.20

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Solution

The fourth proportional to 11,131.12, 15,358.64 and 6,653.20 is: 9,180.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,131.12 : 15,358.64 = 6,653.20 : x
  2. Step 2: Convert to fraction form
    11,131.12/15,358.64 = 6,653.20/x
  3. Step 3: Cross multiply
    11,131.12x = 15,358.64 × 6,653.20
  4. Step 4: Simplify right side
    11,131.12x = 102,184,103.65
  5. Step 5: Solve for x
    x = 102,184,103.65/11,131.12
  6. Step 6: Final answer
    x = 9,180.04

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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.