Home / 20,572.20-30,880.26-18,122.76

Finding the Fourth Proportional to 20,572.20, 30,880.26 and 18,122.76

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Solution

The fourth proportional to 20,572.20, 30,880.26 and 18,122.76 is: 27,203.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,572.20 : 30,880.26 = 18,122.76 : x
  2. Step 2: Convert to fraction form
    20,572.20/30,880.26 = 18,122.76/x
  3. Step 3: Cross multiply
    20,572.20x = 30,880.26 × 18,122.76
  4. Step 4: Simplify right side
    20,572.20x = 559,635,540.72
  5. Step 5: Solve for x
    x = 559,635,540.72/20,572.20
  6. Step 6: Final answer
    x = 27,203.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.