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Finding the Fourth Proportional to 13,819.10, 20,728.65 and 4,585.10

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Solution

The fourth proportional to 13,819.10, 20,728.65 and 4,585.10 is: 6,877.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,819.10 : 20,728.65 = 4,585.10 : x
  2. Step 2: Convert to fraction form
    13,819.10/20,728.65 = 4,585.10/x
  3. Step 3: Cross multiply
    13,819.10x = 20,728.65 × 4,585.10
  4. Step 4: Simplify right side
    13,819.10x = 95,042,933.12
  5. Step 5: Solve for x
    x = 95,042,933.12/13,819.10
  6. Step 6: Final answer
    x = 6,877.65

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Similar ratio
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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.