Home / 21,977.33-30,328.77-11,905.74

Finding the Fourth Proportional to 21,977.33, 30,328.77 and 11,905.74

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Solution

The fourth proportional to 21,977.33, 30,328.77 and 11,905.74 is: 16,429.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,977.33 : 30,328.77 = 11,905.74 : x
  2. Step 2: Convert to fraction form
    21,977.33/30,328.77 = 11,905.74/x
  3. Step 3: Cross multiply
    21,977.33x = 30,328.77 × 11,905.74
  4. Step 4: Simplify right side
    21,977.33x = 361,086,450.14
  5. Step 5: Solve for x
    x = 361,086,450.14/21,977.33
  6. Step 6: Final answer
    x = 16,429.95

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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.