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Finding the Fourth Proportional to 13,995.54, 20,993.27 and 3,607.22

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Solution

The fourth proportional to 13,995.54, 20,993.27 and 3,607.22 is: 5,410.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,995.54 : 20,993.27 = 3,607.22 : x
  2. Step 2: Convert to fraction form
    13,995.54/20,993.27 = 3,607.22/x
  3. Step 3: Cross multiply
    13,995.54x = 20,993.27 × 3,607.22
  4. Step 4: Simplify right side
    13,995.54x = 75,727,343.41
  5. Step 5: Solve for x
    x = 75,727,343.41/13,995.54
  6. Step 6: Final answer
    x = 5,410.82

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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.