Home / 21,977.84-30,329.32-11,906.24

Finding the Fourth Proportional to 21,977.84, 30,329.32 and 11,906.24

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Solution

The fourth proportional to 21,977.84, 30,329.32 and 11,906.24 is: 16,430.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,977.84 : 30,329.32 = 11,906.24 : x
  2. Step 2: Convert to fraction form
    21,977.84/30,329.32 = 11,906.24/x
  3. Step 3: Cross multiply
    21,977.84x = 30,329.32 × 11,906.24
  4. Step 4: Simplify right side
    21,977.84x = 361,108,162.96
  5. Step 5: Solve for x
    x = 361,108,162.96/21,977.84
  6. Step 6: Final answer
    x = 16,430.56

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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.