Home / 31,791.57-43,872.55-19,861.84

Finding the Fourth Proportional to 31,791.57, 43,872.55 and 19,861.84

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Solution

The fourth proportional to 31,791.57, 43,872.55 and 19,861.84 is: 27,409.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,791.57 : 43,872.55 = 19,861.84 : x
  2. Step 2: Convert to fraction form
    31,791.57/43,872.55 = 19,861.84/x
  3. Step 3: Cross multiply
    31,791.57x = 43,872.55 × 19,861.84
  4. Step 4: Simplify right side
    31,791.57x = 871,389,409.16
  5. Step 5: Solve for x
    x = 871,389,409.16/31,791.57
  6. Step 6: Final answer
    x = 27,409.45

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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.