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Finding the Fourth Proportional to 13,757.64, 20,630.16 and 4,395.84

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Solution

The fourth proportional to 13,757.64, 20,630.16 and 4,395.84 is: 6,591.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,757.64 : 20,630.16 = 4,395.84 : x
  2. Step 2: Convert to fraction form
    13,757.64/20,630.16 = 4,395.84/x
  3. Step 3: Cross multiply
    13,757.64x = 20,630.16 × 4,395.84
  4. Step 4: Simplify right side
    13,757.64x = 90,686,882.53
  5. Step 5: Solve for x
    x = 90,686,882.53/13,757.64
  6. Step 6: Final answer
    x = 6,591.75

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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.