Home / 11,221.21-16,832.51-4,647.91

Finding the Fourth Proportional to 11,221.21, 16,832.51 and 4,647.91

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Solution

The fourth proportional to 11,221.21, 16,832.51 and 4,647.91 is: 6,972.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,221.21 : 16,832.51 = 4,647.91 : x
  2. Step 2: Convert to fraction form
    11,221.21/16,832.51 = 4,647.91/x
  3. Step 3: Cross multiply
    11,221.21x = 16,832.51 × 4,647.91
  4. Step 4: Simplify right side
    11,221.21x = 78,235,991.55
  5. Step 5: Solve for x
    x = 78,235,991.55/11,221.21
  6. Step 6: Final answer
    x = 6,972.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.