Home / 20,297.06-30,369.03-11,981.60

Finding the Fourth Proportional to 20,297.06, 30,369.03 and 11,981.60

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Solution

The fourth proportional to 20,297.06, 30,369.03 and 11,981.60 is: 17,927.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,297.06 : 30,369.03 = 11,981.60 : x
  2. Step 2: Convert to fraction form
    20,297.06/30,369.03 = 11,981.60/x
  3. Step 3: Cross multiply
    20,297.06x = 30,369.03 × 11,981.60
  4. Step 4: Simplify right side
    20,297.06x = 363,869,569.85
  5. Step 5: Solve for x
    x = 363,869,569.85/20,297.06
  6. Step 6: Final answer
    x = 17,927.21

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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.