Home / 31,384-43,313.76-18,136

Finding the Fourth Proportional to 31,384, 43,313.76 and 18,136

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Solution

The fourth proportional to 31,384, 43,313.76 and 18,136 is: 25,029.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,384 : 43,313.76 = 18,136 : x
  2. Step 2: Convert to fraction form
    31,384/43,313.76 = 18,136/x
  3. Step 3: Cross multiply
    31,384x = 43,313.76 × 18,136
  4. Step 4: Simplify right side
    31,384x = 785,538,351.36
  5. Step 5: Solve for x
    x = 785,538,351.36/31,384
  6. Step 6: Final answer
    x = 25,029.90

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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.