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Finding the Fourth Proportional to 14,797.80, 20,399.73 and 9,128.73

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Solution

The fourth proportional to 14,797.80, 20,399.73 and 9,128.73 is: 12,584.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,797.80 : 20,399.73 = 9,128.73 : x
  2. Step 2: Convert to fraction form
    14,797.80/20,399.73 = 9,128.73/x
  3. Step 3: Cross multiply
    14,797.80x = 20,399.73 × 9,128.73
  4. Step 4: Simplify right side
    14,797.80x = 186,223,627.24
  5. Step 5: Solve for x
    x = 186,223,627.24/14,797.80
  6. Step 6: Final answer
    x = 12,584.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.