Home / 28,419.10-39,221.01-16,321.28

Finding the Fourth Proportional to 28,419.10, 39,221.01 and 16,321.28

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Solution

The fourth proportional to 28,419.10, 39,221.01 and 16,321.28 is: 22,524.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,419.10 : 39,221.01 = 16,321.28 : x
  2. Step 2: Convert to fraction form
    28,419.10/39,221.01 = 16,321.28/x
  3. Step 3: Cross multiply
    28,419.10x = 39,221.01 × 16,321.28
  4. Step 4: Simplify right side
    28,419.10x = 640,136,889.99
  5. Step 5: Solve for x
    x = 640,136,889.99/28,419.10
  6. Step 6: Final answer
    x = 22,524.88

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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.