Home / 31,613.80-43,628.31-18,185.05

Finding the Fourth Proportional to 31,613.80, 43,628.31 and 18,185.05

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Solution

The fourth proportional to 31,613.80, 43,628.31 and 18,185.05 is: 25,096.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,613.80 : 43,628.31 = 18,185.05 : x
  2. Step 2: Convert to fraction form
    31,613.80/43,628.31 = 18,185.05/x
  3. Step 3: Cross multiply
    31,613.80x = 43,628.31 × 18,185.05
  4. Step 4: Simplify right side
    31,613.80x = 793,382,998.77
  5. Step 5: Solve for x
    x = 793,382,998.77/31,613.80
  6. Step 6: Final answer
    x = 25,096.10

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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.