Home / 13,656.30-20,481.57-4,891.74

Finding the Fourth Proportional to 13,656.30, 20,481.57 and 4,891.74

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Solution

The fourth proportional to 13,656.30, 20,481.57 and 4,891.74 is: 7,336.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,656.30 : 20,481.57 = 4,891.74 : x
  2. Step 2: Convert to fraction form
    13,656.30/20,481.57 = 4,891.74/x
  3. Step 3: Cross multiply
    13,656.30x = 20,481.57 × 4,891.74
  4. Step 4: Simplify right side
    13,656.30x = 100,190,515.23
  5. Step 5: Solve for x
    x = 100,190,515.23/13,656.30
  6. Step 6: Final answer
    x = 7,336.58

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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.