Home / 20,993.36-31,336.44-18,502.31

Finding the Fourth Proportional to 20,993.36, 31,336.44 and 18,502.31

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Solution

The fourth proportional to 20,993.36, 31,336.44 and 18,502.31 is: 27,618.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,993.36 : 31,336.44 = 18,502.31 : x
  2. Step 2: Convert to fraction form
    20,993.36/31,336.44 = 18,502.31/x
  3. Step 3: Cross multiply
    20,993.36x = 31,336.44 × 18,502.31
  4. Step 4: Simplify right side
    20,993.36x = 579,796,434.66
  5. Step 5: Solve for x
    x = 579,796,434.66/20,993.36
  6. Step 6: Final answer
    x = 27,618.09

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1.5x scale

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.