Home / 13,175.96-18,182.84-8,139.02

Finding the Fourth Proportional to 13,175.96, 18,182.84 and 8,139.02

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Solution

The fourth proportional to 13,175.96, 18,182.84 and 8,139.02 is: 11,231.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,175.96 : 18,182.84 = 8,139.02 : x
  2. Step 2: Convert to fraction form
    13,175.96/18,182.84 = 8,139.02/x
  3. Step 3: Cross multiply
    13,175.96x = 18,182.84 × 8,139.02
  4. Step 4: Simplify right side
    13,175.96x = 147,990,498.42
  5. Step 5: Solve for x
    x = 147,990,498.42/13,175.96
  6. Step 6: Final answer
    x = 11,231.86

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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.