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Finding the Fourth Proportional to 13,864.80, 20,797.20 and 13,500.30

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Solution

The fourth proportional to 13,864.80, 20,797.20 and 13,500.30 is: 20,250.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,864.80 : 20,797.20 = 13,500.30 : x
  2. Step 2: Convert to fraction form
    13,864.80/20,797.20 = 13,500.30/x
  3. Step 3: Cross multiply
    13,864.80x = 20,797.20 × 13,500.30
  4. Step 4: Simplify right side
    13,864.80x = 280,768,439.16
  5. Step 5: Solve for x
    x = 280,768,439.16/13,864.80
  6. Step 6: Final answer
    x = 20,250.45

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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.