Home / 31,172.56-43,034.18-18,429.64

Finding the Fourth Proportional to 31,172.56, 43,034.18 and 18,429.64

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Solution

The fourth proportional to 31,172.56, 43,034.18 and 18,429.64 is: 25,442.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,172.56 : 43,034.18 = 18,429.64 : x
  2. Step 2: Convert to fraction form
    31,172.56/43,034.18 = 18,429.64/x
  3. Step 3: Cross multiply
    31,172.56x = 43,034.18 × 18,429.64
  4. Step 4: Simplify right side
    31,172.56x = 793,104,137.78
  5. Step 5: Solve for x
    x = 793,104,137.78/31,172.56
  6. Step 6: Final answer
    x = 25,442.38

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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.