Home / 21,104.57-29,090.81-16,621.22

Finding the Fourth Proportional to 21,104.57, 29,090.81 and 16,621.22

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Solution

The fourth proportional to 21,104.57, 29,090.81 and 16,621.22 is: 22,910.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,104.57 : 29,090.81 = 16,621.22 : x
  2. Step 2: Convert to fraction form
    21,104.57/29,090.81 = 16,621.22/x
  3. Step 3: Cross multiply
    21,104.57x = 29,090.81 × 16,621.22
  4. Step 4: Simplify right side
    21,104.57x = 483,524,867.27
  5. Step 5: Solve for x
    x = 483,524,867.27/21,104.57
  6. Step 6: Final answer
    x = 22,910.91

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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.