Home / 11,138.10-16,688.92-6,742.23

Finding the Fourth Proportional to 11,138.10, 16,688.92 and 6,742.23

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Solution

The fourth proportional to 11,138.10, 16,688.92 and 6,742.23 is: 10,102.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,138.10 : 16,688.92 = 6,742.23 : x
  2. Step 2: Convert to fraction form
    11,138.10/16,688.92 = 6,742.23/x
  3. Step 3: Cross multiply
    11,138.10x = 16,688.92 × 6,742.23
  4. Step 4: Simplify right side
    11,138.10x = 112,520,537.09
  5. Step 5: Solve for x
    x = 112,520,537.09/11,138.10
  6. Step 6: Final answer
    x = 10,102.31

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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.