Home / 21,977.44-30,328.85-11,906.14

Finding the Fourth Proportional to 21,977.44, 30,328.85 and 11,906.14

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Solution

The fourth proportional to 21,977.44, 30,328.85 and 11,906.14 is: 16,430.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,977.44 : 30,328.85 = 11,906.14 : x
  2. Step 2: Convert to fraction form
    21,977.44/30,328.85 = 11,906.14/x
  3. Step 3: Cross multiply
    21,977.44x = 30,328.85 × 11,906.14
  4. Step 4: Simplify right side
    21,977.44x = 361,099,477.98
  5. Step 5: Solve for x
    x = 361,099,477.98/21,977.44
  6. Step 6: Final answer
    x = 16,430.46

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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.