Home / 21,409.09-29,544.57-11,977.66

Finding the Fourth Proportional to 21,409.09, 29,544.57 and 11,977.66

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Solution

The fourth proportional to 21,409.09, 29,544.57 and 11,977.66 is: 16,529.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,409.09 : 29,544.57 = 11,977.66 : x
  2. Step 2: Convert to fraction form
    21,409.09/29,544.57 = 11,977.66/x
  3. Step 3: Cross multiply
    21,409.09x = 29,544.57 × 11,977.66
  4. Step 4: Simplify right side
    21,409.09x = 353,874,666.58
  5. Step 5: Solve for x
    x = 353,874,666.58/21,409.09
  6. Step 6: Final answer
    x = 16,529.18

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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.