Home / 31,359.39-43,274.37-18,613.11

Finding the Fourth Proportional to 31,359.39, 43,274.37 and 18,613.11

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Solution

The fourth proportional to 31,359.39, 43,274.37 and 18,613.11 is: 25,685.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,359.39 : 43,274.37 = 18,613.11 : x
  2. Step 2: Convert to fraction form
    31,359.39/43,274.37 = 18,613.11/x
  3. Step 3: Cross multiply
    31,359.39x = 43,274.37 × 18,613.11
  4. Step 4: Simplify right side
    31,359.39x = 805,470,608.99
  5. Step 5: Solve for x
    x = 805,470,608.99/31,359.39
  6. Step 6: Final answer
    x = 25,685.15

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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.