Home / 18,682.36-25,778.46-11,127.76

Finding the Fourth Proportional to 18,682.36, 25,778.46 and 11,127.76

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Solution

The fourth proportional to 18,682.36, 25,778.46 and 11,127.76 is: 15,354.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,682.36 : 25,778.46 = 11,127.76 : x
  2. Step 2: Convert to fraction form
    18,682.36/25,778.46 = 11,127.76/x
  3. Step 3: Cross multiply
    18,682.36x = 25,778.46 × 11,127.76
  4. Step 4: Simplify right side
    18,682.36x = 286,856,516.05
  5. Step 5: Solve for x
    x = 286,856,516.05/18,682.36
  6. Step 6: Final answer
    x = 15,354.40

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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.