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Finding the Fourth Proportional to 12,168.99, 18,242.51 and 4,375.98

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Solution

The fourth proportional to 12,168.99, 18,242.51 and 4,375.98 is: 6,560.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,168.99 : 18,242.51 = 4,375.98 : x
  2. Step 2: Convert to fraction form
    12,168.99/18,242.51 = 4,375.98/x
  3. Step 3: Cross multiply
    12,168.99x = 18,242.51 × 4,375.98
  4. Step 4: Simplify right side
    12,168.99x = 79,828,837.03
  5. Step 5: Solve for x
    x = 79,828,837.03/12,168.99
  6. Step 6: Final answer
    x = 6,560.02

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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.