Home / 31,865.42-43,972.57-18,436.89

Finding the Fourth Proportional to 31,865.42, 43,972.57 and 18,436.89

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Solution

The fourth proportional to 31,865.42, 43,972.57 and 18,436.89 is: 25,441.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,865.42 : 43,972.57 = 18,436.89 : x
  2. Step 2: Convert to fraction form
    31,865.42/43,972.57 = 18,436.89/x
  3. Step 3: Cross multiply
    31,865.42x = 43,972.57 × 18,436.89
  4. Step 4: Simplify right side
    31,865.42x = 810,717,343.92
  5. Step 5: Solve for x
    x = 810,717,343.92/31,865.42
  6. Step 6: Final answer
    x = 25,441.92

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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.