Home / 21,981.03-30,333.83-11,909.54

Finding the Fourth Proportional to 21,981.03, 30,333.83 and 11,909.54

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Solution

The fourth proportional to 21,981.03, 30,333.83 and 11,909.54 is: 16,435.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,981.03 : 30,333.83 = 11,909.54 : x
  2. Step 2: Convert to fraction form
    21,981.03/30,333.83 = 11,909.54/x
  3. Step 3: Cross multiply
    21,981.03x = 30,333.83 × 11,909.54
  4. Step 4: Simplify right side
    21,981.03x = 361,261,902.19
  5. Step 5: Solve for x
    x = 361,261,902.19/21,981.03
  6. Step 6: Final answer
    x = 16,435.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.