Home / 20,859.44-31,297.12-12,545.33

Finding the Fourth Proportional to 20,859.44, 31,297.12 and 12,545.33

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Solution

The fourth proportional to 20,859.44, 31,297.12 and 12,545.33 is: 18,822.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,859.44 : 31,297.12 = 12,545.33 : x
  2. Step 2: Convert to fraction form
    20,859.44/31,297.12 = 12,545.33/x
  3. Step 3: Cross multiply
    20,859.44x = 31,297.12 × 12,545.33
  4. Step 4: Simplify right side
    20,859.44x = 392,632,510.60
  5. Step 5: Solve for x
    x = 392,632,510.60/20,859.44
  6. Step 6: Final answer
    x = 18,822.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.