Home / 28,184.36-38,946.22-20,213.96

Finding the Fourth Proportional to 28,184.36, 38,946.22 and 20,213.96

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Solution

The fourth proportional to 28,184.36, 38,946.22 and 20,213.96 is: 27,932.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,184.36 : 38,946.22 = 20,213.96 : x
  2. Step 2: Convert to fraction form
    28,184.36/38,946.22 = 20,213.96/x
  3. Step 3: Cross multiply
    28,184.36x = 38,946.22 × 20,213.96
  4. Step 4: Simplify right side
    28,184.36x = 787,257,087.97
  5. Step 5: Solve for x
    x = 787,257,087.97/28,184.36
  6. Step 6: Final answer
    x = 27,932.41

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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.