Home / 31,671.99-43,706.79-18,243.18

Finding the Fourth Proportional to 31,671.99, 43,706.79 and 18,243.18

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Solution

The fourth proportional to 31,671.99, 43,706.79 and 18,243.18 is: 25,175.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,671.99 : 43,706.79 = 18,243.18 : x
  2. Step 2: Convert to fraction form
    31,671.99/43,706.79 = 18,243.18/x
  3. Step 3: Cross multiply
    31,671.99x = 43,706.79 × 18,243.18
  4. Step 4: Simplify right side
    31,671.99x = 797,350,837.19
  5. Step 5: Solve for x
    x = 797,350,837.19/31,671.99
  6. Step 6: Final answer
    x = 25,175.27

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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.