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Finding the Fourth Proportional to 14,811.60, 20,404.80 and 10,327.20

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Solution

The fourth proportional to 14,811.60, 20,404.80 and 10,327.20 is: 14,226.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,811.60 : 20,404.80 = 10,327.20 : x
  2. Step 2: Convert to fraction form
    14,811.60/20,404.80 = 10,327.20/x
  3. Step 3: Cross multiply
    14,811.60x = 20,404.80 × 10,327.20
  4. Step 4: Simplify right side
    14,811.60x = 210,724,450.56
  5. Step 5: Solve for x
    x = 210,724,450.56/14,811.60
  6. Step 6: Final answer
    x = 14,226.99

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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.