Home / 15,481.99-21,364.80-8,408.35

Finding the Fourth Proportional to 15,481.99, 21,364.80 and 8,408.35

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Solution

The fourth proportional to 15,481.99, 21,364.80 and 8,408.35 is: 11,603.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,481.99 : 21,364.80 = 8,408.35 : x
  2. Step 2: Convert to fraction form
    15,481.99/21,364.80 = 8,408.35/x
  3. Step 3: Cross multiply
    15,481.99x = 21,364.80 × 8,408.35
  4. Step 4: Simplify right side
    15,481.99x = 179,642,716.08
  5. Step 5: Solve for x
    x = 179,642,716.08/15,481.99
  6. Step 6: Final answer
    x = 11,603.33

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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.