Home / 20,581.88-28,418.99-15,794.24

Finding the Fourth Proportional to 20,581.88, 28,418.99 and 15,794.24

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Solution

The fourth proportional to 20,581.88, 28,418.99 and 15,794.24 is: 21,808.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,581.88 : 28,418.99 = 15,794.24 : x
  2. Step 2: Convert to fraction form
    20,581.88/28,418.99 = 15,794.24/x
  3. Step 3: Cross multiply
    20,581.88x = 28,418.99 × 15,794.24
  4. Step 4: Simplify right side
    20,581.88x = 448,856,127.55
  5. Step 5: Solve for x
    x = 448,856,127.55/20,581.88
  6. Step 6: Final answer
    x = 21,808.32

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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.