Home / 11,103.94-15,321.96-7,130.44

Finding the Fourth Proportional to 11,103.94, 15,321.96 and 7,130.44

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Solution

The fourth proportional to 11,103.94, 15,321.96 and 7,130.44 is: 9,839.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,103.94 : 15,321.96 = 7,130.44 : x
  2. Step 2: Convert to fraction form
    11,103.94/15,321.96 = 7,130.44/x
  3. Step 3: Cross multiply
    11,103.94x = 15,321.96 × 7,130.44
  4. Step 4: Simplify right side
    11,103.94x = 109,252,278.16
  5. Step 5: Solve for x
    x = 109,252,278.16/11,103.94
  6. Step 6: Final answer
    x = 9,839.06

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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.