Home / 13,126.25-18,117.27-8,650.80

Finding the Fourth Proportional to 13,126.25, 18,117.27 and 8,650.80

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Solution

The fourth proportional to 13,126.25, 18,117.27 and 8,650.80 is: 11,940.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,126.25 : 18,117.27 = 8,650.80 : x
  2. Step 2: Convert to fraction form
    13,126.25/18,117.27 = 8,650.80/x
  3. Step 3: Cross multiply
    13,126.25x = 18,117.27 × 8,650.80
  4. Step 4: Simplify right side
    13,126.25x = 156,728,879.32
  5. Step 5: Solve for x
    x = 156,728,879.32/13,126.25
  6. Step 6: Final answer
    x = 11,940.11

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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.