Home / 31,282.96-43,174.20-18,707.44

Finding the Fourth Proportional to 31,282.96, 43,174.20 and 18,707.44

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Solution

The fourth proportional to 31,282.96, 43,174.20 and 18,707.44 is: 25,818.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,282.96 : 43,174.20 = 18,707.44 : x
  2. Step 2: Convert to fraction form
    31,282.96/43,174.20 = 18,707.44/x
  3. Step 3: Cross multiply
    31,282.96x = 43,174.20 × 18,707.44
  4. Step 4: Simplify right side
    31,282.96x = 807,678,756.05
  5. Step 5: Solve for x
    x = 807,678,756.05/31,282.96
  6. Step 6: Final answer
    x = 25,818.49

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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.