Home / 20,993.43-31,336.54-18,502.36

Finding the Fourth Proportional to 20,993.43, 31,336.54 and 18,502.36

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Solution

The fourth proportional to 20,993.43, 31,336.54 and 18,502.36 is: 27,618.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,993.43 : 31,336.54 = 18,502.36 : x
  2. Step 2: Convert to fraction form
    20,993.43/31,336.54 = 18,502.36/x
  3. Step 3: Cross multiply
    20,993.43x = 31,336.54 × 18,502.36
  4. Step 4: Simplify right side
    20,993.43x = 579,799,851.72
  5. Step 5: Solve for x
    x = 579,799,851.72/20,993.43
  6. Step 6: Final answer
    x = 27,618.16

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.