Home / 13,578.58-20,336.28-13,204.88

Finding the Fourth Proportional to 13,578.58, 20,336.28 and 13,204.88

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Solution

The fourth proportional to 13,578.58, 20,336.28 and 13,204.88 is: 19,776.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,578.58 : 20,336.28 = 13,204.88 : x
  2. Step 2: Convert to fraction form
    13,578.58/20,336.28 = 13,204.88/x
  3. Step 3: Cross multiply
    13,578.58x = 20,336.28 × 13,204.88
  4. Step 4: Simplify right side
    13,578.58x = 268,538,137.05
  5. Step 5: Solve for x
    x = 268,538,137.05/13,578.58
  6. Step 6: Final answer
    x = 19,776.60

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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.