Home / 21,500.32-29,669.45-11,940.83

Finding the Fourth Proportional to 21,500.32, 29,669.45 and 11,940.83

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Solution

The fourth proportional to 21,500.32, 29,669.45 and 11,940.83 is: 16,477.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,500.32 : 29,669.45 = 11,940.83 : x
  2. Step 2: Convert to fraction form
    21,500.32/29,669.45 = 11,940.83/x
  3. Step 3: Cross multiply
    21,500.32x = 29,669.45 × 11,940.83
  4. Step 4: Simplify right side
    21,500.32x = 354,277,858.64
  5. Step 5: Solve for x
    x = 354,277,858.64/21,500.32
  6. Step 6: Final answer
    x = 16,477.79

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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.