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Finding the Fourth Proportional to 13,596.60, 18,762.21 and 8,221.02

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Solution

The fourth proportional to 13,596.60, 18,762.21 and 8,221.02 is: 11,344.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,596.60 : 18,762.21 = 8,221.02 : x
  2. Step 2: Convert to fraction form
    13,596.60/18,762.21 = 8,221.02/x
  3. Step 3: Cross multiply
    13,596.60x = 18,762.21 × 8,221.02
  4. Step 4: Simplify right side
    13,596.60x = 154,244,503.65
  5. Step 5: Solve for x
    x = 154,244,503.65/13,596.60
  6. Step 6: Final answer
    x = 11,344.34

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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.