Home / 31,661.56-43,704-18,238.24

Finding the Fourth Proportional to 31,661.56, 43,704 and 18,238.24

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Solution

The fourth proportional to 31,661.56, 43,704 and 18,238.24 is: 25,175.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,661.56 : 43,704 = 18,238.24 : x
  2. Step 2: Convert to fraction form
    31,661.56/43,704 = 18,238.24/x
  3. Step 3: Cross multiply
    31,661.56x = 43,704 × 18,238.24
  4. Step 4: Simplify right side
    31,661.56x = 797,084,040.96
  5. Step 5: Solve for x
    x = 797,084,040.96/31,661.56
  6. Step 6: Final answer
    x = 25,175.13

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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.