Home / 21,120.09-29,104.88-16,076.32

Finding the Fourth Proportional to 21,120.09, 29,104.88 and 16,076.32

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Solution

The fourth proportional to 21,120.09, 29,104.88 and 16,076.32 is: 22,154.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,120.09 : 29,104.88 = 16,076.32 : x
  2. Step 2: Convert to fraction form
    21,120.09/29,104.88 = 16,076.32/x
  3. Step 3: Cross multiply
    21,120.09x = 29,104.88 × 16,076.32
  4. Step 4: Simplify right side
    21,120.09x = 467,899,138.54
  5. Step 5: Solve for x
    x = 467,899,138.54/21,120.09
  6. Step 6: Final answer
    x = 22,154.23

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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.