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Finding the Fourth Proportional to 13,602.54, 20,363.72 and 13,267.20

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Solution

The fourth proportional to 13,602.54, 20,363.72 and 13,267.20 is: 19,861.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,602.54 : 20,363.72 = 13,267.20 : x
  2. Step 2: Convert to fraction form
    13,602.54/20,363.72 = 13,267.20/x
  3. Step 3: Cross multiply
    13,602.54x = 20,363.72 × 13,267.20
  4. Step 4: Simplify right side
    13,602.54x = 270,169,479.65
  5. Step 5: Solve for x
    x = 270,169,479.65/13,602.54
  6. Step 6: Final answer
    x = 19,861.69

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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.