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Finding the Fourth Proportional to 13,819.60, 20,727.20 and 4,585.60

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Solution

The fourth proportional to 13,819.60, 20,727.20 and 4,585.60 is: 6,877.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,819.60 : 20,727.20 = 4,585.60 : x
  2. Step 2: Convert to fraction form
    13,819.60/20,727.20 = 4,585.60/x
  3. Step 3: Cross multiply
    13,819.60x = 20,727.20 × 4,585.60
  4. Step 4: Simplify right side
    13,819.60x = 95,046,648.32
  5. Step 5: Solve for x
    x = 95,046,648.32/13,819.60
  6. Step 6: Final answer
    x = 6,877.67

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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.