Home / 20,859.55-31,103.26-18,541.33

Finding the Fourth Proportional to 20,859.55, 31,103.26 and 18,541.33

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Solution

The fourth proportional to 20,859.55, 31,103.26 and 18,541.33 is: 27,646.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,859.55 : 31,103.26 = 18,541.33 : x
  2. Step 2: Convert to fraction form
    20,859.55/31,103.26 = 18,541.33/x
  3. Step 3: Cross multiply
    20,859.55x = 31,103.26 × 18,541.33
  4. Step 4: Simplify right side
    20,859.55x = 576,695,683.62
  5. Step 5: Solve for x
    x = 576,695,683.62/20,859.55
  6. Step 6: Final answer
    x = 27,646.61

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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.