Home / 13,175.23-18,186.45-8,143.31

Finding the Fourth Proportional to 13,175.23, 18,186.45 and 8,143.31

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Solution

The fourth proportional to 13,175.23, 18,186.45 and 8,143.31 is: 11,240.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,175.23 : 18,186.45 = 8,143.31 : x
  2. Step 2: Convert to fraction form
    13,175.23/18,186.45 = 8,143.31/x
  3. Step 3: Cross multiply
    13,175.23x = 18,186.45 × 8,143.31
  4. Step 4: Simplify right side
    13,175.23x = 148,097,900.15
  5. Step 5: Solve for x
    x = 148,097,900.15/13,175.23
  6. Step 6: Final answer
    x = 11,240.63

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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.