Home / 11,455.97-15,808.57-6,351.21

Finding the Fourth Proportional to 11,455.97, 15,808.57 and 6,351.21

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Solution

The fourth proportional to 11,455.97, 15,808.57 and 6,351.21 is: 8,764.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,455.97 : 15,808.57 = 6,351.21 : x
  2. Step 2: Convert to fraction form
    11,455.97/15,808.57 = 6,351.21/x
  3. Step 3: Cross multiply
    11,455.97x = 15,808.57 × 6,351.21
  4. Step 4: Simplify right side
    11,455.97x = 100,403,531.99
  5. Step 5: Solve for x
    x = 100,403,531.99/11,455.97
  6. Step 6: Final answer
    x = 8,764.30

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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.