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Finding the Fourth Proportional to 12,995.52, 19,494.45 and 3,635.64

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Solution

The fourth proportional to 12,995.52, 19,494.45 and 3,635.64 is: 5,453.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,995.52 : 19,494.45 = 3,635.64 : x
  2. Step 2: Convert to fraction form
    12,995.52/19,494.45 = 3,635.64/x
  3. Step 3: Cross multiply
    12,995.52x = 19,494.45 × 3,635.64
  4. Step 4: Simplify right side
    12,995.52x = 70,874,802.20
  5. Step 5: Solve for x
    x = 70,874,802.20/12,995.52
  6. Step 6: Final answer
    x = 5,453.79

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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.