Home / 14,057.64-21,103.20-11,138.40

Finding the Fourth Proportional to 14,057.64, 21,103.20 and 11,138.40

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Solution

The fourth proportional to 14,057.64, 21,103.20 and 11,138.40 is: 16,720.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,057.64 : 21,103.20 = 11,138.40 : x
  2. Step 2: Convert to fraction form
    14,057.64/21,103.20 = 11,138.40/x
  3. Step 3: Cross multiply
    14,057.64x = 21,103.20 × 11,138.40
  4. Step 4: Simplify right side
    14,057.64x = 235,055,882.88
  5. Step 5: Solve for x
    x = 235,055,882.88/14,057.64
  6. Step 6: Final answer
    x = 16,720.86

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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.