Home / 13,132.36-18,116.94-8,650.36

Finding the Fourth Proportional to 13,132.36, 18,116.94 and 8,650.36

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Solution

The fourth proportional to 13,132.36, 18,116.94 and 8,650.36 is: 11,933.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,132.36 : 18,116.94 = 8,650.36 : x
  2. Step 2: Convert to fraction form
    13,132.36/18,116.94 = 8,650.36/x
  3. Step 3: Cross multiply
    13,132.36x = 18,116.94 × 8,650.36
  4. Step 4: Simplify right side
    13,132.36x = 156,718,053.10
  5. Step 5: Solve for x
    x = 156,718,053.10/13,132.36
  6. Step 6: Final answer
    x = 11,933.73

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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.