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Finding the Fourth Proportional to 14,497.20, 21,697.20 and 12,747.60

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Solution

The fourth proportional to 14,497.20, 21,697.20 and 12,747.60 is: 19,078.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,497.20 : 21,697.20 = 12,747.60 : x
  2. Step 2: Convert to fraction form
    14,497.20/21,697.20 = 12,747.60/x
  3. Step 3: Cross multiply
    14,497.20x = 21,697.20 × 12,747.60
  4. Step 4: Simplify right side
    14,497.20x = 276,587,226.72
  5. Step 5: Solve for x
    x = 276,587,226.72/14,497.20
  6. Step 6: Final answer
    x = 19,078.67

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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.