Home / 21,181.19-29,230.05-11,749.75

Finding the Fourth Proportional to 21,181.19, 29,230.05 and 11,749.75

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Solution

The fourth proportional to 21,181.19, 29,230.05 and 11,749.75 is: 16,214.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,181.19 : 29,230.05 = 11,749.75 : x
  2. Step 2: Convert to fraction form
    21,181.19/29,230.05 = 11,749.75/x
  3. Step 3: Cross multiply
    21,181.19x = 29,230.05 × 11,749.75
  4. Step 4: Simplify right side
    21,181.19x = 343,445,575.09
  5. Step 5: Solve for x
    x = 343,445,575.09/21,181.19
  6. Step 6: Final answer
    x = 16,214.65

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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.