Home / 21,181.08-29,226.74-11,749.70

Finding the Fourth Proportional to 21,181.08, 29,226.74 and 11,749.70

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Solution

The fourth proportional to 21,181.08, 29,226.74 and 11,749.70 is: 16,212.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,181.08 : 29,226.74 = 11,749.70 : x
  2. Step 2: Convert to fraction form
    21,181.08/29,226.74 = 11,749.70/x
  3. Step 3: Cross multiply
    21,181.08x = 29,226.74 × 11,749.70
  4. Step 4: Simplify right side
    21,181.08x = 343,405,426.98
  5. Step 5: Solve for x
    x = 343,405,426.98/21,181.08
  6. Step 6: Final answer
    x = 16,212.84

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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.