Home / 21,180.54-29,230.10-11,749.11

Finding the Fourth Proportional to 21,180.54, 29,230.10 and 11,749.11

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Solution

The fourth proportional to 21,180.54, 29,230.10 and 11,749.11 is: 16,214.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,180.54 : 29,230.10 = 11,749.11 : x
  2. Step 2: Convert to fraction form
    21,180.54/29,230.10 = 11,749.11/x
  3. Step 3: Cross multiply
    21,180.54x = 29,230.10 × 11,749.11
  4. Step 4: Simplify right side
    21,180.54x = 343,427,660.21
  5. Step 5: Solve for x
    x = 343,427,660.21/21,180.54
  6. Step 6: Final answer
    x = 16,214.30

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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.