Home / 31,245.21-43,117.92-18,667.53

Finding the Fourth Proportional to 31,245.21, 43,117.92 and 18,667.53

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Solution

The fourth proportional to 31,245.21, 43,117.92 and 18,667.53 is: 25,760.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,245.21 : 43,117.92 = 18,667.53 : x
  2. Step 2: Convert to fraction form
    31,245.21/43,117.92 = 18,667.53/x
  3. Step 3: Cross multiply
    31,245.21x = 43,117.92 × 18,667.53
  4. Step 4: Simplify right side
    31,245.21x = 804,905,065.14
  5. Step 5: Solve for x
    x = 804,905,065.14/31,245.21
  6. Step 6: Final answer
    x = 25,760.91

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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.