Home / 18,519.20-25,558.16-10,561.44

Finding the Fourth Proportional to 18,519.20, 25,558.16 and 10,561.44

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Solution

The fourth proportional to 18,519.20, 25,558.16 and 10,561.44 is: 14,575.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,519.20 : 25,558.16 = 10,561.44 : x
  2. Step 2: Convert to fraction form
    18,519.20/25,558.16 = 10,561.44/x
  3. Step 3: Cross multiply
    18,519.20x = 25,558.16 × 10,561.44
  4. Step 4: Simplify right side
    18,519.20x = 269,930,973.35
  5. Step 5: Solve for x
    x = 269,930,973.35/18,519.20
  6. Step 6: Final answer
    x = 14,575.74

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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.