Home / 20,993.57-31,336.77-18,502.52

Finding the Fourth Proportional to 20,993.57, 31,336.77 and 18,502.52

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Solution

The fourth proportional to 20,993.57, 31,336.77 and 18,502.52 is: 27,618.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,993.57 : 31,336.77 = 18,502.52 : x
  2. Step 2: Convert to fraction form
    20,993.57/31,336.77 = 18,502.52/x
  3. Step 3: Cross multiply
    20,993.57x = 31,336.77 × 18,502.52
  4. Step 4: Simplify right side
    20,993.57x = 579,809,213.66
  5. Step 5: Solve for x
    x = 579,809,213.66/20,993.57
  6. Step 6: Final answer
    x = 27,618.42

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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.