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Finding the Fourth Proportional to 13,754.68, 20,632.04 and 4,989.60

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Solution

The fourth proportional to 13,754.68, 20,632.04 and 4,989.60 is: 7,484.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,754.68 : 20,632.04 = 4,989.60 : x
  2. Step 2: Convert to fraction form
    13,754.68/20,632.04 = 4,989.60/x
  3. Step 3: Cross multiply
    13,754.68x = 20,632.04 × 4,989.60
  4. Step 4: Simplify right side
    13,754.68x = 102,945,626.78
  5. Step 5: Solve for x
    x = 102,945,626.78/13,754.68
  6. Step 6: Final answer
    x = 7,484.41

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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.