Home / 21,969.21-30,321.09-16,341.33

Finding the Fourth Proportional to 21,969.21, 30,321.09 and 16,341.33

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Solution

The fourth proportional to 21,969.21, 30,321.09 and 16,341.33 is: 22,553.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,969.21 : 30,321.09 = 16,341.33 : x
  2. Step 2: Convert to fraction form
    21,969.21/30,321.09 = 16,341.33/x
  3. Step 3: Cross multiply
    21,969.21x = 30,321.09 × 16,341.33
  4. Step 4: Simplify right side
    21,969.21x = 495,486,937.65
  5. Step 5: Solve for x
    x = 495,486,937.65/21,969.21
  6. Step 6: Final answer
    x = 22,553.70

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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.