Home / 31,120.42-42,950.97-18,374.96

Finding the Fourth Proportional to 31,120.42, 42,950.97 and 18,374.96

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Solution

The fourth proportional to 31,120.42, 42,950.97 and 18,374.96 is: 25,360.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,120.42 : 42,950.97 = 18,374.96 : x
  2. Step 2: Convert to fraction form
    31,120.42/42,950.97 = 18,374.96/x
  3. Step 3: Cross multiply
    31,120.42x = 42,950.97 × 18,374.96
  4. Step 4: Simplify right side
    31,120.42x = 789,222,355.71
  5. Step 5: Solve for x
    x = 789,222,355.71/31,120.42
  6. Step 6: Final answer
    x = 25,360.27

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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.