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Finding the Fourth Proportional to 18,404.69, 27,621.03 and 13,487.18

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Solution

The fourth proportional to 18,404.69, 27,621.03 and 13,487.18 is: 20,241.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,404.69 : 27,621.03 = 13,487.18 : x
  2. Step 2: Convert to fraction form
    18,404.69/27,621.03 = 13,487.18/x
  3. Step 3: Cross multiply
    18,404.69x = 27,621.03 × 13,487.18
  4. Step 4: Simplify right side
    18,404.69x = 372,529,803.40
  5. Step 5: Solve for x
    x = 372,529,803.40/18,404.69
  6. Step 6: Final answer
    x = 20,241.03

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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.