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Finding the Fourth Proportional to 18,482.09, 27,720.11 and 5,155.99

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Solution

The fourth proportional to 18,482.09, 27,720.11 and 5,155.99 is: 7,733.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,482.09 : 27,720.11 = 5,155.99 : x
  2. Step 2: Convert to fraction form
    18,482.09/27,720.11 = 5,155.99/x
  3. Step 3: Cross multiply
    18,482.09x = 27,720.11 × 5,155.99
  4. Step 4: Simplify right side
    18,482.09x = 142,924,524.55
  5. Step 5: Solve for x
    x = 142,924,524.55/18,482.09
  6. Step 6: Final answer
    x = 7,733.14

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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.