Home / 21,150.20-29,190.34-12,195.92

Finding the Fourth Proportional to 21,150.20, 29,190.34 and 12,195.92

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Solution

The fourth proportional to 21,150.20, 29,190.34 and 12,195.92 is: 16,832.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,150.20 : 29,190.34 = 12,195.92 : x
  2. Step 2: Convert to fraction form
    21,150.20/29,190.34 = 12,195.92/x
  3. Step 3: Cross multiply
    21,150.20x = 29,190.34 × 12,195.92
  4. Step 4: Simplify right side
    21,150.20x = 356,003,139.63
  5. Step 5: Solve for x
    x = 356,003,139.63/21,150.20
  6. Step 6: Final answer
    x = 16,832.14

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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.